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The greater white-fronted goose (Anser albifrons) is a species of goose, closely related to the smaller lesser white-fronted goose (A. erythropus). [2] The greater white-fronted goose is migratory , breeding in northern Canada , Alaska , Greenland and Russia, and winters farther south in North America, Europe and Asia. [ 1 ]
(this paper presented claims that Black Brant and Dark-bellied Brent Goose were interbreeding extensively in the Russian Arctic) Sangster, George (2000). Taxonomic status of bernicla and nigricans Brent Goose British Birds 91(12):565–572 (a critical re-evaluation of the claims made in the above paper by Syroechkovski et al.) Ebels, E.B. (1997).
The black geese of the genus Branta are waterfowl belonging to the true geese and swans subfamily Anserinae. They occur in the northern coastal regions of the Palearctic and all over North America , migrating to more southerly coasts in winter, and as resident birds in the Hawaiian Islands .
The greylag goose or graylag goose (Anser anser) is a species of large goose in the waterfowl family Anatidae and the type species of the genus Anser.It has mottled and barred grey and white plumage and an orange beak and pink legs.
It is the smallest of the three white geese that breed in North America. It is similar in appearance to a white-phase snow goose, but about 40% smaller. Other differences from the snow goose are that the bill is smaller in proportion to its body and lacks "black lips". Like snow geese, Ross's geese may exhibit a darker "blue" phase or morph ...
The snow goose (Anser caerulescens) is a species of goose native to North America. Both white and dark morphs exist, the latter often known as blue goose. Its name derives from the typically white plumage. The species was previously placed in the genus Chen, but is now typically included in the "gray goose" genus Anser. [2] [3]
A domestic goose is a goose that humans have domesticated and kept for their meat, eggs, or down feathers, or as companion animals. Domestic geese have been derived through selective breeding from the wild greylag goose ( Anser anser domesticus ) and swan goose ( Anser cygnoides domesticus ).
The head of a pilgrim goose is medium-sized and oval shaped, [9] with a flattened crown (top of the head). [2] Their necks are average in both length and thickness [2] and have a slightly arched form. [9] They also have a medium length beak which is straight and smoothly attached to the head. [9]