Bufflehead Bucephala albeola

Although I've seen a few Buffleheads in North America and a couple (of unknown origin) in the UK, the only ones I've photographed have been these captive birds. Records in the UK are tainted with question marks over their origin - the first I saw, in Nottinghamshire in 1994, was widely considered to be a wild vagrant from America while one I saw in Suffolk in 1997 was considered by most to be an escapee from a collection, but unless the bird is ringed or has its wings clipped, it's rarely possible to be sure one way or the other.

captive Buffleheads, Martin Mere (Lancashire, UK), 26th December 2014