Guillaume

Does this Guillemot look like a Guillaume, I wonder? The word 'Guillemot' is, according to my trusty Birds Britannica, a word of French origin, a pet form of Guillaume and it "finds its echo in 'willock', an old name that may yet survive in northern Scotland". Although this was taken at Fowlesheugh, the RSPB reserve in NE Scotland, I think that this fella looks more like a Guillaume than a Willock!