Thayer's Gull
Thayermöwe (Larus thayeri )
The Thayermöwe (Larus thayeri ) is a monotypic species of the family of the seagulls. She bears her name in honor of the American amateur ornithologist John Eliot Thayer ( 1862-1933 ). The IUCN classifies the Thayermöwe as an uncritical ( least concern ).
Appearance
The Thayermöwe reaches a height 55-63 centimeters. The wingspan is 142-152 cm. The weight varies 700-1100 grams.
In breeding plumage, the Thayermöwe a very close resemblance to the herring gull. The beak is yellow with a red spot on the tip of the beak. The beak inside is pink vigorously. The iris is dark yellow brown in most individuals, about ten percent of the population have yellow eyes. The legs and feet are reddish. The eye ring is bright red. The wings are gray, the wings have black and white feather tips.
In Plain dress the head of the Thayermöwe is dashed dark brown.
Distribution area
The Thayermöwe is a Nearctic Art It breeds on the west coast of Hudson Bay and the Arctic Islands of Canada. It is a migratory bird, which is found on the west coast of North America during the winter months. She's here to observe from British Columbia to California.
Way of life
The Thayermöwe eats mainly fish, a minor role in the diet also play crustaceans and mollusks. Thayermöwen also eat young birds and eggs of other birds and also take carrion. Birds inland eat a lesser extent, berries and seeds.
The Thayermöwe lives all year gregarious and nest in colonies. She is often associated with other gull species. The males defend their nest against other males. The nest usually consists of three eggs, which are incubated by both parents birds. The chicks fledge at 25 to 30 days.