Adult breeding. Note: small, unmarked yellow bill and large white mirror on wing.
  • Adult breeding. Note: small, unmarked yellow bill and large white mirror on wing.
  • Adult nonbreeding. Note: smudgy head (compare to breeding)
  • Immature (1st winter). Note: small pink bill with dark tip, pink legs, dove-like head.

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Mew Gull

Larus canus
Charadriiformes
This is a large and highly varied group of birds that do not have many outward similarities. Most are water birds that feed on invertebrates or small aquatic creatures. The order is well represented in Washington, with seven families:
Laridae
The family Laridae is made up of birds closely associated with water. Distributed throughout the world, representatives of this family nest on every continent, including Antarctica. Most are long-lived birds, many of which do not breed until they are three or four years old. Most are colony nesters and nest on the ground. Clutch size is generally small, varying from one to four eggs. Both parents incubate the eggs and help feed the young. The young typically hatch covered with down and stay in the nest for a few days, after which they leave the nest but stay nearby. Most, especially in Washington, raise a single brood a year. This group is known for its elaborate displays in the air and on the ground.

The Washington representatives of this family can be split into two groups, or subfamilies. The adaptable gulls are the most familiar. Sociable in all seasons, they are mainly coastal, but a number of species also nest inland. Many—but not all—are found around people. Gulls have highly variable foraging techniques and diets. Terns forage in flight, swooping to catch fish or insects. They dive headfirst into the water for fish. Although they are likely to be near water, they spend less time swimming than gulls.
Common winter west, rare east.
  • Puget Sound Seabird Survey

General Description

The smallest North American white-headed gull, the Mew Gull is commonly described as having a 'gentle' or 'dove-headed' look. The Mew Gull has typical gull-like plumage--slate-gray back and wings, a white head, tail, and body, and black wingtips with white spots. The beak and legs are yellow. In breeding plumage, the Mew Gull has a clean white head, a dark eye, and a solid yellow bill without markings. In non-breeding plumage, its head is smudged with brown, the red eye-ring is absent, and the bill is partially dark. Juveniles are varying degrees of mottled brown interspersed with white and gray.

Habitat

In winter, the Mew Gull inhabits coastal waters, and is commonly found in estuaries, river mouths, and freshwater ponds close to the shore. Summer habitat is concentrated around northern lakes. This species is not common at garbage dumps in any season and is seldom found offshore.

Behavior

Mew Gulls can be found with other gulls at abundant food sources, such as spawning areas and along tidal convergence zones. Like many gulls, the Mew Gull uses a variety of foraging techniques, obtaining food while walking, wading, swimming, or flying. It often feeds in fields and at sewage ponds. The Mew Gull sometimes carries a hard-shelled mollusk into the air and drops it on rocks or pavement to break it open.

Diet

Mew Gulls are omnivores whose diet varies with the season. On their breeding grounds, Mew Gulls eat mostly insects, which they often catch in mid-air. In coastal areas during the non-breeding season, small fish, crustaceans, and mollusks make up the majority of the diet. Other marine creatures, earthworms, small rodents, young birds, eggs, carrion, refuse, grain, and berries round out the diet of this opportunistic species.

Nesting

Breeding in small colonies or isolated pairs, Mew Gulls nest on high ground near water, or on top of a stump, or in a dense spruce up to 20 feet off the ground. Mew Gulls in Europe have been known to nest on gravel rooftops. When the nest is on the ground, it is a shallow scrape lined with grass. Nests built in trees are usually shallow cups of twigs and grasses. Both sexes help build the nest and incubate the 3 eggs for about 4 weeks. The young from nests built on the ground may leave the nest after a few days, but stay close by. The young in nests built in trees stay in the nest for a longer period. Both parents help feed the young, which fledge at about 4 weeks of age.

Migration Status

Inland breeders, Mew Gulls migrate directly to the coast, and disperse south from there. They first start appearing along the coast in late July, and numbers increase gradually through the fall. The height of the migration in the Northwest is from October to December. Migration back to the breeding grounds in the spring begins in March and continues through May.

Conservation Status

Numbers appear to be stable since Mew Gulls seem to benefit from human activities.

When and Where to Find in Washington

Mew Gulls are not known to breed in Washington, but breeding records exist from southern British Columbia, so breeding in Washington is a possibility. They are common all along the Pacific Coast from August to early May, and a rare visitor to eastern Washington from mid-September to mid-November. Groups of Mew Gulls can be found in agricultural fields along the lower Columbia River, and at the mouth of the River during the spring smelt runs in March.

Abundance Code DefinitionsAbundance

C=Common; F=Fairly Common; U=Uncommon; R=Rare; I=Irregular
EcoregionJanFebMarAprMayJunJulAugSepOctNovDec
Oceanic
Pacific Northwest CoastCCCCU UCCCC
Puget TroughCCCCU RUCCCC
North CascadesR RRR
West CascadesUUUUR RUUU
East Cascades R
Okanogan
Canadian Rockies
Blue Mountains
Columbia PlateauRR RRR

Washington Range Map

North American Range Map

North America map legend

Federal Endangered Species ListAudubon/American Bird Conservancy Watch ListState Endangered Species ListAudubon Washington Vulnerable Birds List

View full list of Washington State's Species of Special Concern