Greylag goose the western greylag goose, breeds in Iceland and north and central Europe; "A. a. rubrirostris", the eastern greylag goose, breeds in Romania, Turkey and Russia eastwards to northeastern China. The two subspecies intergrade where their ranges meet. The greylag goose sometimes hybridises with other species of goose including the barnacle goose ("Branta leucopsis") and the Canada goose ("Branta canadensis"), and occasionally with the mute swan ("Cygnus olor"). The greylag goose was one of the first animals to be domesticated; this happened at least 3000 years ago in Ancient Egypt, the domestic breed being known as "A. a. domesticus". As the
Snow goose Snow goose The snow goose ("Anser caerulescens"), consisting of both a white phase and blue phase (blue goose), is a North American species of goose commonly collectively referred to as "light geese". Its name derives from the typically white plumage. Many taxonomic authorities placed this species and the other "white geese" in the genus "Chen". Most authorities now follow the traditional treatment of placing these species in the "gray goose" genus "Anser". The scientific name is from the Latin "anser", "goose", and " caerulescens", "bluish", derived from "caeruleus ", "dark blue". This goose breeds north of the timberline in Greenland,