The seagull is perhaps best known as being a scavenger. It is most often seen in large, noisy flocks congregating wherever food is available. They can almost always be found around fishing boats, picnic grounds, parking lots and garbage dumps. Many people consider the gull to be a nuisance, but they actually perform a very valuable service. They are garbage men (sanitation engineers for the politically correct) with wings. They scavenge up great numbers of dead animals and organic litter which could pose a health threat to humans.
Seagull Frequently Asked Questions
Information on various types of North American Seagulls
Click on any of the names below to be take directly to that particular
gull's information, or simply scroll down the page. The information listed on
this page is by no means an exhaustive work on seagulls. It is simply intended
to assist you in identifying the various types of seagull's that live in or
visit North America.
Black Legged Kitiwake, Bonaparte'sGull California Gull, Common Black Headed Gull, Franklin's Gull, Glaucous Gull, Glaucous Winged Gull, Great Black-Backed Gull, Heermann's
Gull, Herring Gull, Iceland Gull, Ivory Gull, Laughing Gull, Lesser Black-Backed Gull, Little Gull, Mew Gull, Red-legged Kittiwake, Ring-billed Gull, Ross's Gull, Sabine's Gull, Thayer's Gull, Western Gull
Adults are roughly 16 inches (40 cm) in length with a wingspan of 35-40
inches (90-100 cm). They have a white head and body. Their backs are grey, and
their grey wings are tipped solid black. They have black legs and a yellow bill.
The hind toe on their foot is only a tiny bump, giving the bird its scientific
name Rissa tridactyla, meaning
“three-toed” (instead of four on each foot). In the winter they acquire a dark
grey smudge behind their eyes and develop a grey hind-neck collar. Their name is
derived from its call which sounds like a shrill 'kittee-wa-aaake,
kitte-wa-aaake'.
The black-legged kittiwake prefers to eat marine
invertebrates, plankton, and fish. They like to feed in flocks and catch their
food at the surface of the water. They also dive just below the surface of the
water to catch their prey, making them one of the few gulls that dives and swims
underwater.
This gull is a coastal bird found in the north Pacific, north
Atlantic, Scandinavia, and Europe. They breed in large, noisy colonies on
cliffs. A typical nest is lined with moss and seaweed and will contain up to two
eggs. Breeding and nesting time frame is usually in July to August. Kittiwakes
are born white and develop a distinctive black “W” band across the length of
their wings as they become a juvenile. As an adult, the black “W” is replaced
with a solid gray color and only the tips remain black.
The Bonaparte's Gull is named after Charles Lucien Bonaparte, a nephew of
Napoleon, who was a leading ornithologist in the 1800s in America and Europe.
This small gull has an adult body that is roughly 17 inches (45 cm) in length
with a wingspan of 35-40 inches (90-100 cm). This gull has a dark gray to black
head and bill, a white neck, gray body and wings, and bright orange-red legs and
feet. It is one of the few gulls that prefers to nest in trees during mating
season.
During the summer, the Bonaparte's gull can be found from the
Great Lakes to as far north as Alaska. While inland during the summer, they feed
chiefly on insects that they capture in the air, pick from croplands, or gather
from the surface of lakes or ponds, Bonaparte's gulls migrate south to spend the
winter on the Pacific coast where they feed on small fish, crustacea, snails and
marine worms.
Bonaparte's Gulls reach maturity when they are two years
old and prefer to nest in trees during mating season. Breeding and nesting time
frame for Bonaparte's Gulls is usually in July to August. They nest singly or in
loose colonies located on islands or lakeshores. The fir or spruce tree is the
most common choice for nesting. and nests are built of small twigs, moss,
lichen, grass, and generally any foliage that is easily available.
The California Gull adults are roughly 19-21 inches (47-54 cm) in length
with a wingspan of up to 51 inches (130 cm). Their head is white with a yellow
bill. The neck and under parts are also white. The gull's back and wings are
dark gray. The legs and feet are a greenish-yellow color. Breeding and nesting
time frame for California Gulls is usually in May to July. The nest is typically
a shallow depression on the ground lined with vegetation and feathers. The
female gull normally lays 2 or 3 eggs. Both parents will take turns feeding the
young birds. The California Gull is a “four-year gull,” in that it takes four
years for them to reach adult plumage.
The California Gull can be found
on the pacific coastline from northern Mexico to British Columbia. They range
far inland from New Mexico to Manitoba. They prefer to eat insects, fish and
eggs, however, they are well known for scavenging at garbage dumps or docks.
They have also been seen to follow farmers plowing in fields, eating the insects
stirred up by this activity.
The California Gull has an interesting
foraging strategy for catching alkali flies along the shores of salty lakes in
the Great Basin in the western United States. It starts at one end of a huge
swarm of flies sitting on the beach and runs through the flies with its head
down and bill open, snapping up flies.
The Common Black Headed Gull adults are roughly 13-17 inches (33-44cm) in
length with a 35-41 inch (89-105 cm) wingspan. The summer adult has a
chocolate-brown head (not black, despite the name), the body and wings are pale
grey, with black tips on the primary wing feathers. The bill is red with a black
tip, and the legs are also red. The “black” hood is lost in winter, leaving just
a dark vertical streak or spot behind the eye. Setting the Common Black Headed
Gull apart from the other “hooded” gulls is the fact that they do no actually
have a black head during breeding season.
The Common Black Headed Gull is
relatively new to North America, being first seen in Canada in the early 1900's.
It is a small gull which breeds in much of Europe and Asia, and also in coastal
eastern Canada. Most of the population is migratory, preferring to winter
further south, but some birds in the milder westernmost areas of Europe do not
migrate. Some birds that reside in eastern Canada will also spend the winter in
the northeastern United States.
The Common Black Headed Gull reaches
maturity when they are two years old, which is typical of small gulls. Breeding
and nesting time frame for Common Black Headed Gulls is usually in April to
May.Their nest is typically a shallow depression on the ground lined with
vegetation and feathers. The female gull normally lays 2 or 3 eggs. Both parents
will take turns feeding the young birds. They prefer to eat insects, small fish,
small berries and earthworms. They have been known to follow fishing boats,
plunge-diving for smaller fish. They also like to follow plows tilling in fields
eating the earthworms and other invertebrates stirred up by this activity.
The Franklin's Gull (named after the Artic explorer Sir John Franklin) is a
small gull that is roughly 13-14 inches (33-36cm) in length with a 35-41 inch
(89-105 cm) wingspan. Their head is black with a distinctive small white ring
around the eyes. The bill is orange with a black spot near the tip. Their gray
wings have a white border and black tips. Their legs and feet are
red-orange.
Breeding and nesting time frame for Franklin's Gulls is
usually in May to June. Their nests are floating masses of rushes, cattails, and
grasses built in shallow water and usually attached to emergent vegetation.
Franklin's Gulls form monogamous pair bonds for the duration of the nesting
season. Both members of the pair help build the nest and incubate the 3 eggs for
about 23-26 days. Both parents feed the young and brood them, taking turns so
that one parent is present at all times. The Franklin's Gull nests primarily
along lakes and marshes in the northern prairie regions of central Canada and
north-central United States.
Franklin's Gulls have in recent decades
expanded their breeding range southward to include some of the lakes in the
Plains States and Rocky Mountain regions. The Franklin's Gull is unique among
other gulls in that it has two complete molts each year rather than one. They
prefer to eat insects, spiders, small fish, and small berries. They also like to
follow plows tilling in fields eating the earthworms and other invertebrates
stirred up by farmers.
The Glaucous Gull is a large gull whose body will reach roughly 27 inches
(68 cm) as an adult. Their wingspan can reach 59-72 inches (149-182 cm) in
length. The Glaucous Gulls are very pale in all plumages, with a white head and
underparts. The bill is yellow with a red spot near the tip of the lower
mandible. The back and wings are light gray with no black in the wings or tail.
A juvenile Glaucous gull will have light gray and brown coloration. The Glaucous
Gull is a “four-year gull,” in that it takes four years to reach adult
plumage.
Breeding and nesting time frame for Glaucous Gulls is usually in
May to June. A Glaucous Gull nest is a shallow depression made in a mound of
grass, sedge, moss, or twigs. They have little to no lining in them. One to
three eggs are laid and both parents share the nest sitting duties for the
incubation period. Both parents take turns feeding the chicks for up to 2
months. The young leave the nest on foot a few days after hatching. but they
stay close to the nest and the protection of their parents until their first
flight which happens around 7 weeks after birth.
The Glaucous Gull breeds
in Alaska and northern Canada. They migrate south to the upper portions of the
United States for the winter. The Glaucous is one of the most predatory gulls,
capturing and eating auks, plovers, ptarmigans, small ducks and birds as well as
fish. It is also known to be scavenger, feeding on garbage and dead animals. The
Glaucous Gull has been seen to walk into bird colonies to steal eggs and chicks
that have been left unprotected.
The Glaucous-Winged Gull is named for its gray wings; the greek word
“glaukos” means blue-gray. It is a large bird (although smaller than a Glaucous
Gull) whose body will reach roughly 20-23 inches (50-59 cm) as an adult. Their
wingspan can reach 47-56 inches (120-143 cm) in length. They have a white head
and underparts, but unlike the Glaucous Gull however, the Glaucous-Winged Gull
has medium gray wings. Like the Glaucous Gull, the Glaucous-Winged Gull also has
a yellow bill with a red spot near the tip of the lower mandible. The
Glaucous-Winged Gull is a “four-year gull,” in that it takes four years to reach
adult plumage.
Breeding and nesting time frame for Glaucous Winged Gulls
is usually in May to June. Nesting is usually in colonies where the chicks are
safest from predators, and birds first breed at four years of age. Nests are
usually on the ground or in protected rocky formations. The nest is a shallow
depression with a ring of vegetation and nearby debris. Both parents incubate
the 2-3 eggs for about four weeks. Newborn chicks are covered in down and may
leave the nest as soon as two days post-hatching, although they stay near the
nest where the parents can protect them. Both parents feed the young, which
first begin to fly at 5-7 weeks old, and then leave the colony about 2 weeks
after they've learned to fly.
Glaucous-Winged Gulls are found all along
the Pacific Northwest coastline. Glaucous Winged Gulls are omnivores (they will
eat most anything), their diet includes fish and other marine creatures, small
birds, eggs, small mammals, invertebrates, and in populated areas, refuse from
dumps, trash cans, and parking lots. Glaucous-Winged Gulls migrate south from
Alaska going as far south as the Baja Peninsula of Mexico.
Considered to be the largest gull in the world, the Great Black-Backed Gull
adult body will reach roughly 28-31 inches (71-79cm) in length. Their wingspan
can reach 57-63 inches (146-160 cm) in length. They have a white head, neck and
under parts with pale pink legs. Their back and wings are a very dark gray to
sooty black color. This gull also has a yellow bill with a red spot near the tip
of the lower mandible.
Breeding and nesting time frame for Great
Black-Backed Gulls is usually in May to June. They prefer to build their nests
on rocky cliffs or other areas where the chicks will be safe. The nest itself
consists of an untidy mass of grass, seaweed, small plants and debris. The newly
hatched gulls do not fly away from the nest area until they are about 50 days
old. It is not uncommon for the young gulls to return to the nesting territory
to rest and be fed for another 50 days. The Great Black-Backed Gull is a
“four-year gull,” in that it takes four years to reach adult plumage.
The
Great Black-Back Gull preys on almost anything smaller than itself, including
other gulls, small ducks, small birds, fish and shellfish, as well as the eggs
and young of other gulls. Unlike most Larus
gulls, Great Black-Backed Gulls are mostly carnivorous and frequently hunt and
kill any prey smaller than themselves, behaving more like hawks and eagles than
a typical larid gull. They frequently rob
other seabirds of their catch rather than finding food on their own. Great
Black-Backed Gulls are often found in the company of herring gulls and the two
species will even nest together in mixed colonies.
The Heermann's Gull derived its name in 1852 by John Cassin for Dr. Adolphus
Heermann, a mid-19th century field collector of birds and their eggs, especially
in California. Heermann's Gulls are a medium sized gull. The adults have a body
length that is roughly 18-21 inches (46-53 cm) in length, and a wingspan of
41-45 inches (104-115 cm). They have gray bodies, blackish-gray wings and tail
feathers and a red bill with a black tip. Its head is gray when it is not
breeding and white when it has its breeding plumage.
This bird has a reverse
migration in that it nests in western Mexico and then migrates north along
Pacific coast in summer and fall. It will arrive as far north as southern
British Columbia coast in late July or early August. The Heermann's Gull
migration is timed with the movement of Brown Pelicans. When a pelican comes to
the surface with a fish, the gull is often waiting to try to take the fish out
of its pouch. Even though this gull is not large in physical size, it is very
aggressive and harasses other birds to make them drop their catch. It also
forages in flight over the sea, dipping to the surface or diving into the water
for fish.
The Heermann's Gull diet consists of small fish, crustaceans
and mollusks. It has been seen to sometimes eat the eggs of other birds, refuse
or carrion. Breeding and nesting time frame for Heermann's Gulls is usually in
June to July. The Heermann's Gull nest in the spring in colonies on islands off
the west coast of Mexico. Their nest is typically on level ground instead of
rocky crags. The nest may be in just a shallow scrape in the soil or between
boulders where it is hidden. They make the nest of sticks and grasses, and
sometimes line them with feathers. The young are fed by both parents.
The Herring Gull is a large gull that can easily be confused with almost any
of the other large gull species, especially the Thayer's gull. The adults have a
body length that is roughly 22-26 inches (56-66 cm) in length, and a wingspan of
54-57 inches (137-146 cm).The adult wears the typical gull-like plumage of
slate-gray back and wings. The wingtips are black spotted with white. Their body
and head is white and their eyes are yellow. The beak is yellow with a red spot
on the lower mandible, as in most large gulls.
Herring Gulls feed mostly
on natural prey such as marine fish, especially the herring (which is one of
their favorite foods - hence the name “herring” gull) and invertebrates,
although the diet varies considerably with season and location. In addition to
marine life, Herring Gulls also eat other birds, eggs, garbage, and
carrion.
Breeding and nesting time frame for Herring Gulls is usually in
May to June. Herring gulls breed from Alaska east across northern Canada to the
Maritime Provinces, south to British Columbia, north-central Canada, and Great
Lakes, and along Atlantic Coast to North Carolina. They winter in all but the
northernmost breeding areas, from southern Alaska all the down to Baja
California. They are also in found in Europe. Relatively long-lived birds,
Herring Gulls don't typically breed until they are four or five years old.
Herring Gulls are very social birds and prefer to nest in colonies. Both members
of a pair help build the nest, which is typically located on the ground in a
sheltered location to protect it from the wind. The nest is a shallow scrape
lined with grass, feathers, and other debris. The parents continue to feed the
young by regurgitation for approximately another month after they begin to fly.
The young first fly at the age of about six weeks.
The Iceland Gull is a large gull which breeds in the arctic regions of
Canada and Greenland, but oddly enough, not in Iceland, where it is only seen in
the winter. It is migratory gull, wintering from both sides of the North
Atlantic as far south as the British Isles and northernmost states of the
eastern United States. Its coloring is very pale in all plumages, with no black
in the wings or tail. Adults are pale grey above, with a yellowish-green bill
with a red spot near tip of lower mandible. The adults have a body length that
is roughly 20-24 inches (50-60 cm) in length, and a wingspan of 45-54 inches
(115-137 cm).
The Iceland Gull, Larus
glaucoides, (top left picture) breeds in Greenland during May to June,
remaining in Greenland for the summer months and travels to Europe and the
Northeastern United States for the winter. The Iceland Gull has no darkness in
its wingtips, or only very little, compared to Kumlien's version which has more
darkness in the wingtips. During the winter, the Iceland Gull concentrates at
the Arctic sea ice openings which are created by ocean currents and warm
upwellings (places the often nutrient-rich waters from the ocean depths rise to
the surface attracting many fish) where they forage mostly at the water's
surface, where the ice is slushy.
The Iceland Gull is divided into two subspecies. The western form known as "Kumlien's Gull," Larus glaucoides kumlieni, (bottom left picture) breeds in Canada and shows variable amounts of dark coloration in the wingtips. The Kumlien's Gull is very easily (and often) confused with the Thayer's gull. The Kumlien's Gull breeds in the eastern Canadian Arctic during the summer, and then migrates to the Atlantic coastline of Canada, with some straying down the Atlantic Coast of the United States.
The Ivory Gull is a medium sized gull that is roughly 16-17 inches (40-43cm)
in length with a 43-47 inch (108-120 cm) wingspan. The adult feathers are
completely white. They have black eyes, black legs and feet. The bill is pale
gray and tipped with yellow. Ivory Gulls are arctic birds that range across
Northern Canada, Greenland, and Arctic Western Europe. In the summer, they are
usually found above the Arctic Circle. The birds nest on granite, limestone, or
gravel, and steep cliffs of mountains protruding from glaciers. The Ivory Gull
is a “two-year gull,” in that it takes two years to reach adult
plumage.
Nesting colonies are usually close to their source of food, the
marine waters that open early in May through June. In other seasons, Ivory Gulls
are found along the edge of the Artic pack ice. They often arrive at their
breeding grounds before the snow melts, but they don't build a nest until the
ground is sufficiently thawed. Ivory Gulls will nest on either flat ground or
cliffs. The nesting area is excavated with their feet, the nest bowl, not more
than a slight depression, is then lined with feathers, grasses, moss, and
seaweed. The young Ivory Gulls grow rapidly and fly in about a month, making the
entire breeding season as short as 60 days. The juvenile Ivory Gulls then follow
the adults on migration, where they continue to beg for food. Predators and bad
weather are the two main factors that tend to limit Ivory Gull populations. Both
polar bears and arctic foxes like to feed on the gull's eggs and chicks. These
predators have been known to kill all the young in a colony. Artic storms can
also significantly decrease the number of young which are successfully
raised.
Like all gulls, Ivory Gulls are scavengers, feeding on the
carcasses of dead fish and marine mammals. The gull's foraging methods include
skimming the water, stealing from other birds, scavenging, and plunge-diving.
The gull also watches for whales to churn the ocean as they feed, allowing the
seabird to pluck animal plankton from the water. At the edge of the ice flows,
especially in low light conditions, the Ivory Gull will catch lanternfish and
squid. Small fish, krill, and copepods are also part of the gull's diet. In the
summer months, they seek out lemmings and midge larvae.
Laughing Gulls, named for the sound of their call, are a medium sized gull
with a black head in breeding plumage. The adults have a body length that is
roughly 15-18 inches (39-46 cm) in length, and a wingspan of 36-47 inches
(92-120 cm). During the summer months, the adult's back and wings are dark gray,
and the trailing edge of their wings is white, with a black wing-tip. The bill
is a dark red color. During the winter months, the black “hood” is replaced with
a mottled gray hood. The Laughing Gull is a “three-year gull,” in that it takes
three years to reach adult plumage. They live mainly on the Atlantic and Gulf
coasts of the United States, ranging from Maine down through Florida and Texas
and Mexico. They spend the winter in the Caribbean.
Laughing Gulls breed
in coastal marshes and ponds in large colonies. They tend to make large nests,
made largely from grasses and seaweed, and they are always constructed on the
ground. They prefer to build their nests on sandy shorelines. The females lay
their eggs during the months of May and June. The young gulls leave the nest
around 35-40 days after hatching. After leaving the nest, the juveniles stay
together in large groups, seldom associating with the adult gulls.
Like
most gulls, the Laughing Gull has a highly varied diet. It is a carnivore as
well as a scavenger. They will eat insects, fish, shellfish, and crabs. They can
get their food from the water while they are airborne by either skimming the
surface or diving. They often steal food from pelicans, terns, and other
seagulls after they have made a catch. The Laughing Gull also gets food from
man-made sources such as garbage, refuse from fishing boats, and anything tossed
to them by humans.
The Lesser Black-Backed Gull is a medium to large gull that is roughly 20-25
inches (52-64cm) in length with a 53-59 inch (135-150 cm) wingspan. They have a
white head, neck and under parts with yellow legs and feet. Their back and wings
are a very dark gray to sooty black color. This gull also has a yellow bill with
a red spot near the tip of the lower mandible. The Lesser Black-Backed Gull is a
“three-year gull,” in that it takes three years to reach adult
plumage.
The Lesser Black-Backed Gull is divided into several different
subspecies that differ in the darkness of the back. Nearly all individuals that
reach North America are of the graellsii subspecies that breeds in Iceland. They are being
seen with increasing frequency in North America in recent decades and this may
correspond with the large increase in numbers in Iceland. The graellsii subspecies is the palest of
the subspecies, with its back being much lighter than the black wingtips. The
Lesser Black-Backed Gull is normally a European gull, but as its numbers
continue to increase in North America, there is a possibility that the Lesser
Black-Backed Gull may one day begin breeding in North America.
The Lesser
Black-Backed Gull's nest is simply a depression in a large mound of seaweed,
grasses, other vegetation, and any debris they can find. The nest is usually
lined with finer material, such as feathers and moss. These gulls normally nest
in colonies where the chicks are better protected.
The smallest gull on the planet, the Little Gull is a very small sized gull
that is roughly 11-12 inches (29-30 cm) in length with a 24 inch (61 cm)
wingspan. During the summer months, the adult's back and wings are pale gray,
and the trailing edge of their wings is white, with a black wing-tip. The
underside of the wings is a blackish color. The head is black; or very dark
gray. The bill is a dark red-black color. Their legs are red. During the winter
months, the black “hood” is replaced with white feathers that have a dark spot
behind the eyes. The head will often have a partial dark gray cap.
The
Little Gull is quite common across Eurasia. A few pairs have been seen nesting
in North America since the 1960s, and the species is now becoming more common on
the East Coast and the Great Lakes. This gull is most commonly seen in North
America during the winter months. In North America, these gulls usually nest in
small colonies or in isolated pairs. Their nests are built on the ground and
normally near water. The nest is built of grasses, weeds and leaves, and has a
shallow depression in the center. Both parents take of the young chicks, which
leave the nest shortly after hatching. The young gulls stay close to parents who
feed them until they are old enough to fly. The gulls often fly within three to
four weeks after hatching.
The Little Gull feeds on small insects and
insect larvae, crustaceans, mollusks, and small fish. The gulls will pick up
food off the water surface, and will also catch insects while in
flight.
The Mew Gull (named for the cat-like call it often gives) is a small to
medium sized gull that is roughly 16-18 inches (41-46 cm) in length with a 42-45
inch (107-114 cm) wingspan. Their head, neck, and under parts are white. The
bill is yellow with no markings, and there is a small red ring going around the
eyes. The legs and feet are also yellow. The back and tops of the wings are
medium gray. The wingtips are black with white spots. During the winter when the
Mew Gull is in non-breeding plumage, its head is smudged with brown, the red
eye-ring is absent, and the bill is partially dark. The Mew Gull is a
“three-year gull,” in that it takes three years to reach adult
plumage.
The Mew Gull breeds from Alaska south to central British
Columbia and as far east as northern Saskatchewan. They spend the winter on the
Pacific coast of the United States sometimes going as far south as the Baja
peninsula of Mexico. Mew Gulls build nests in conifers (they are the only
white-headed gull that will build a nest in a tree), on islands in marshes (in
vegetation), and on the ground. The parents will aggressively defend their
nests, often diving and swooping upon intruders. When the gulls build their nest
on the ground, it is a simple shallow scrape lined with grass or seaweed. When
they build their nest in a tree it is usually a shallow cup of twigs lined with
grasses. The young hatchlings from nests built on the ground may leave the nest
after a few days, but will stay close by so their parents can feed them. The
young hatchlings in nests built in trees will stay in the nest for a longer
period. Both parents help feed the young, which learn to fly at about 4 weeks of
age.
Mew Gulls are primarily scavengers, preferring to steal their food
rather than catch it themselves. They are also known to hunt insects,
earthworms, mollusks, crustaceans. and occasionally young birds and mice. To
break open hard shells, they drop their catch, such as sea urchins and mollusks,
onto the beach to break them open. Their diet also includes grain, garbage, and
fish.
Red-legged Kittiwakes are a small to medium sized gull. The adults have a
body length that is roughly 16-18 inches (41-46 cm) in length, and a wingspan of
42-45 inches (107-114 cm). Their head, neck, and under parts are white. Their
eyes are slightly larger than normal. The bill, which is shorter and more curved
than an average gull's, is yellow with no markings. The tail is white, the back
and wings are gray; the wingtips are black. The legs and feet are red. During
the non-breeding season, they have a black “smudge” on each side of the head,
just behind the eyes.
The Red-legged Kittiwake breeds on islands in the
Bering Sea. They spend their winters at sea in the Northern Pacific Ocean,
avoiding the ferocious storms that go across the Bering Sea. Their nests tend to
be shallow cups made of mud, grass, seaweed and kelp. Both parents build the
nest and both take their turns incubating the egg(s). The nest will contain one
egg, or sometimes two. Both parents help feed the young, which learn to fly at
about 5 weeks of age.
Red-legged Kittiwakes are one of the few species of
gulls that are not scavengers. Red-legged Kittiwakes feed mainly on small fish
such as lampfish and Pollock, squid, and marine zooplankton. During the summer
they have been found foraging over deep water, ranging from 200 to 2,000 meters
deep. They forage along the surface of the water, by either plunging or dipping
into the water. Red-legged Kittiwakes often forage in flocks over schools of
fish. They can feed during the day and night, but it has been suggested that
Red-legged Kittiwake, with its larger eyes, is better adapted for catching prey
that migrate to the ocean surface during the nighttime.
The Ring-billed Gull is a medium sized gull that is roughly 17-21 inches
(43-54 cm) in length with a 41-46 inch (105-117 cm) wingspan. Their head, neck,
and under parts are white. The bill is yellow with a black ring near the tip
(hence the name of the gull). The back and wings are gray; the wingtips are
black with white spots. The legs and feet are yellow. The Ring-billed Gull is a
“three-year gull,” in that it takes three years to reach adult
plumage.
The Ring-billed Gull breeds across the northern regions of the
North American continent. It is also breeds in the Great Lakes region, the
Canadian Maritimes, and northern New England. In the winter it migrates as far
south as the Baja Peninsula of Mexico and all the way across to the Gulf of
Mexico and Cuba. The nest is a shallow depression made on the ground that is
lined with grass, reeds, and rushes. The nest will typically contain two to four
eggs. Both parents will incubate the eggs and both will feed the hatchlings. The
young chicks learn how to fly in about four weeks.
Ring-billed Gulls are
omnivores (they will eat most anything); their diet includes fish and other
marine creatures, small birds, eggs, rodents, earthworms, and in populated
areas, refuse from dumps, trash cans, and restaurant parking lots. These birds
forage in flight or pick up objects while swimming, walking or wading. They will
steal food from other birds and gulls and frequently scavenge.
The Ross's Gull (named after the North Pole explorer James Clark Ross) is a
small gull that is roughly 12-14 inches (30-36 cm) in length with a 35-41 inch
(89-105 cm) wingspan. These small gulls are best distinguished by their
wedge-shaped tails and pigeon-like flight. Their head, neck, and under parts are
white to pale gray. The back and wings are gray; the trailing edge of the wing
is white. They have red feet and short black bills. During the summer breeding
season, they gain a distinctive black neck ring, and their breast and belly
takes on a pale pink tinge. Immature gulls have a black ear spot and black
tipped wings and tail. The Ross's Gull is a “two-year gull,” in that it takes
only two years to reach adult plumage.
Ross's Gulls breeding locations
are rarely found in North America. A few sites have been found in Northern
Canada and Northern Alaska. Most Ross's Gulls breed in Siberia. The nests are a
shallow scrape that tend to be unlined with any nesting materials. When the
gulls are nesting in wetlands, the nest is a depression in a grassy mound or
loose gravel, and lined with grasses, sedges, moss, or leaves. Nests will
contain one to three eggs. Both parents will incubate the eggs and both will
feed the hatchlings. The young chicks learn how to fly in about three
weeks.
Ross's Gulls are another one of the few species of gulls that are
not scavengers. During the winter months they feed on small fish, invertebrates,
and marine zooplankton. In the summer months they feed upon insects, primarily
beetles and flies. While the exact location and character of their wintering
habitat is unknown, many Ross's Gulls have been seen to forage near pack ice in
the winter.
The Sabine's Gull (named after the British scientist Sir Edward Sabine) is a
small gull that is roughly 12-14 inches (30-36 cm) in length with a 35-41 inch
(89-105 cm) wingspan. It has a slate-gray back, white underparts and tail, and
black wingtips. The adult's bill is black and has a yellow tip. The middle of
the wings is white, giving the bird a distinctive “M” pattern across its wings
in flight. The legs and feet are black. In the summer months (breeding season),
the adult has a dark gray hood, edged in black. The adult in non-breeding
plumage has a partially gray and white head. The juvenile is brown across the
back, neck, and head, with a white face.
Sabine's Gulls nest in the high
Arctic regions of Siberia, Alaska, Canada, and Greenland, in marshy tundra ponds
close to the coast. These gulls usually nest in small colonies, although single
nests have been sighted. The nest is a shallow scrape that lined with grass,
sedge, or moss. The nest will contain from two to five eggs. Both parents will
incubate the eggs and feed the hatchlings. The chicks leave the nest about 48
hours after hatching.
Outside of the breeding season, Sabine's Gulls
spend most of their time at sea, out of sight of land. Although most of these
gulls migrate along the coasts or at sea, some migrate directly north-south,
directly across North America. When at sea, they concentrate over upwellings of
cold, nutrient-rich water. Their main source of food is aquatic invertebrates.
They also eat zooplankton, crustaceans, and small fish.
The Thayer's Gull (named after John E. Thayer, a prominent ornithologist) is
a medium to large gull that is roughly 20-24 inches (52-60 cm) in length with a
55 inch (140 cm) wingspan. Until 1972, it was considered a subspecies of the
Herring Gull, but it is now classified as a full species. That classification is
currently in doubt by many ornithologists because the Thayer's Gull is very
similar to the Iceland Gull in appearance and genetics. The adult gull has solid
a medium-gray color on its back and wings, with black on the outer edges of the
wings. The undersides of the wings are pale white. The head is white in the
breeding season, and has brownish blurred streaking in the non-breeding season.
The bill is yellow with a red spot near the tip of the lower mandible, and the
feet and legs are dark pink. The juvenile birds sport at least seven different
plumages that are themselves variable. The Thayer's Gull is a “four-year gull,”
in that it takes four years to reach adult plumage.
During the breeding
season, Thayer's Gulls nest in the Canadian high Arctic, nesting on the rocky
coastlines of islands. The nest is located on the ledge of a rocky island cliff
where it is easily protected. Both parents help build the nest, which is a low
mound of plant material, with a slight depression in the middle. The female
usually lays 2 or 3 eggs, and both parents help incubate the eggs. The
hatchlings emerge downy and mottled in brown and yellow. The young gulls are fed
and protected by both parents, until they learn to fly in about six
weeks.
Thayer's Gulls spend the winter on or near the coast from British
Columbia down to Baja California. Small populations have been seen scattered
through the Midwest to the Great Lakes. Thayer's Gulls forage while swimming,
walking, or flying. When foraging in flight, they have a tern-like
characteristic in that they drop to the water's surface or plunge just below it.
They eat small fish, crustaceans, mollusks, carrion, eggs, young birds, and
garbage.
The Western Gull is a large dark-backed gull of the Pacific Coast that is
roughly 22-26 inches (56-66 cm) in length with a 50-57 inch (127-145 cm)
wingspan. The adult gull has solid a dark gray color on its back and wings, with
black on the wingtips. The undersides of the wings are white with a narrow band
of gray. The head is white in the breeding season, and has brown streaking in
the non-breeding season. The bill is yellow with a red spot near the tip of the
lower mandible, and the feet and legs are pink. The Western Gull is a “four-year
gull,” in that it takes four years to reach adult plumage.
The Western
Gull prefers to breed on rocky islands near the coast from Southern Washington
down to Baja California. The nest is a simple scrape on the ground that is lined
with any available vegetation. The female usually lays 2 or 3 eggs, and both
parents help incubate the eggs. The young gulls are fed and protected by both
parents, until they learn to fly in about six to seven weeks. In colonies where
there are more females than males, two females may establish a pair bond. Each
lays eggs, and then they both take care of the brood. When female-female pairing
occurs, most of the eggs are infertile and do not hatch.
Western Gulls
spend the winter on or near the coast from British Columbia down to Baja
California. The like to eat marine invertebrates and small fish. They also eat
the eggs and chicks of other seabirds. They will scavenge carrion and garbage.
These birds forage in flight or pick up objects while swimming, walking, or
wading. They will also steal food from cormorants and other gulls. This gull is
commonly seen at garbage dumps.
The Gull or Seagull is a medium to large bird usually gray or white and often has black marking on its head and wings. It has a long bill and webbed feet. Gulls are ground nesting birds. They are found in coastal areas and rarely stray far from land. These highly intelligent birds have learned to co-exist successfully with humans. They eat live crabs and small fish and are often times scavengers. Several different species of seagulls are described in this article:
Heermann’s Gull Common Gull, Mew Gull Herring Gull Glaucous-winged Gull
Ring-Billed Gull California Gull Great Black-backed Gull Western Gull
Seagulls as Pests Seagull Pictures
Heermann’s Gull
There are many differences between the several species found throughout North America. Heermann’s Gull is found mostly on the Isla Rasa off Baja California in the Gulf of California. After breeding season they move to central California and south to Guatemala. Heermann’s Gull is distinctly different from other gulls. They have gray bodies, blackish-gray wings and tail and a red bill with a black tip. Its head is gray when not breeding and white when it is. Two to three eggs that are grayish with gray and brown markings are laid in nests on the ground. Heermann’s Gulls often socialize with brown pelicans and steals food them when possible. This gull is a near threatened species and has been protected since 1964. Picture of Heermann's Gull
Common Gull or Mew Gull
The Common Gull can be found in Europe and Asia and the north western United States, where it is called the Mew Gull. Smaller than the Herring Gull, it breeds near water or in marshes with it nest on the ground or in a tree. Its gray top feathers, white head and breast, greenish legs and black wing tips identify the common gull. There are two other subspecies of the common gull; the Kamchatka Gull found in eastern Eurasia and the Short-Billed Gull found in Alaska and Western Canada.
Herring Gull
The Herring Gull has one of the most recognized laughing calls in the Northern Hemisphere. This large gull breeds across North America, Europe and Asia. They are abundant around inland garbage dumps and have adapted to life within cities. They scavenge for food and seek small prey in fields and on the coast.
Similar to the Ring- Billed Gull, the Herring Gull is much larger, and is identified by its pale gray back, pink legs and thick yellow bill with a red spot. Gulls in their first winter are a brownish color, and once they enter their second and third winters, their colors become softer. The adult female lays three eggs on the ground or in cliff ledges. They live in colonies and defend their nests vigorously. Herring Gull Picture
Ring-Billed Gull
The Ring-Billed Gull is identified by its white head, neck and under parts. It has a short yellow bill with dark ring, silver gray back and wings, yellow legs and yellow eyes. They breed near lakes, rivers and on the coast and are found in Canada and the northern United States. They nest in colonies on the ground often on islands and attend to the same nesting sites year after year.
The ring-billed gull is a migratory bird that travels south to the Gulf of Mexico and to the Atlantic and pacific coasts of North America and along the great lakes. They forge for food in flight and are able to pick up objects while swimming, walking and wading. They eat insects, fish, grain, eggs, earthworms, rodents and food left over by humans. In the late 19th century the ring-billed gull was hunted for its feathers. Ring-Billed Gull Picture
California Gull
The California Gull is smaller than the Herring gull but larger than the Ring-billed gull. It has a black ring around its
yellow bill, yellow legs, brown eyes and a more rounded head than the herring gull. The California gull has black wings with white tips, and a gray back and gray upper wings. They breed in lakes and marshes of western North America and nest in colonies with other birds. Their nest is a shallow depression on the ground lined with vegetation and feathers. The adult female lays two to three eggs, that when hatched are fed by both parents.
The California gull is a migratory bird, traveling to the Pacific coast during the winter. They forage while in flight and eat insects, fish and eggs. They also scavenge at garbage dumps and docks and follow plows in fields for stirred up insects.
The California gull is the state bird of Utah. They are remembered for assisting the Mormon settlers in dealing with a plague of crickets. A seagull monument was erected in Salt Lake City to commemorate the event which is called the “Miracle of the Gulls.” California Gull picture.
Great Black-backed Gull
The largest of all gulls is the Great Black-backed Gull. It breeds on European and North American coasts and islands off the North Atlantic. Adults are identified by their black wings and back, white wing tips, pinkish legs and a red spot on its yellow bill. Young great black-backed gulls are a scaly black brown color. They breed in small colonies making their nest on the ground on top of rocks. They scavenge for small prey and rob other seabirds of their food. This gull can swallow a small wild duck whole. Picture of Great Black-backed Gull
Glaucous-winged Gull
The Glaucous-winged Gull lives off the coast of Alaska south to the coast of Washington. Identified by its white head, neck, breast and belly, this gull has a white tail, grayish wing and back and white tipped wings. It also has pink legs, a flat forehead and a red spot on its yellow beak. The Glaucous-winged gull is rarely found far from saltwater. It feeds along the coast scavenging for dead or weak squid, fish, mussels and human garbage.
Glaucous-winged Gull picture
Western Gull
The Western Gull is recognized as one of the antagonists in Alfred Hitchcock’s movie “The Birds.” Its large white head and gray wings identify the Western Gull. It has a red spot on its yellow bill that is used by chicks to peck at to stimulate feeding. Exclusively a marine gull, the western gull is seldom inland and nests on offshore islands and rocks. Found on the western coast of North America from Washington and British Columbia to Baja California, it is also found on Alcatraz Island.
They eat fish and invertebrates like squid and jellyfish. It cannot dive and feeds on the surface of the water. The western gull will feed on seal and sea lion carcasses, snails, cockles and limpets. They also feet at landfills and take food from people at beaches. Picture of Western Gull
Gulls as Pests
Gulls are common at dumpsites, harbors, and piers and around fishing boats. They are hazardous to low flying aircrafts. Structural damage can be caused from the buildup of gull droppings and from the uric acid contained in the droppings. As a pest, gulls attack people and pets for food and when protecting their young. They pick at roofing materials to build their nests and block gutters with their nests holding moisture against the structure. Controlling Large Seagull PopulationsBest results have been seen when the Super BirdXPeller Pro is set up in areas where seagulls congregate, foraging for food. To keep seagulls from stealing food from people in open, public areas or to keep airports safe from gulls known to be sucked into jet engines (often causing engine failure and sometimes causing plane crashes), use one Super BirdXPeller Pro to cover up to 6 acres. Multiple units (when size of area demands) should be set up to slightly over-lap each other, for best results.
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