By SandyCole (mailto:firstname.lastname@example.org) (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
Asia and North America. Breeds in far NE Russia and W Alaska and winters in Kamchatka, the Aleutian Isles and SW Alaska.
Recorded in Suffolk, Essex, Cumbria and Leicestershire and probably many other places. It was last confirmed breeding on Walney Island, Cumbria where there is an established feral population though only one or two pairs breed and the young birds rarely fledge.