My contribution to Eileeninmd's Saturday's Critters #153. And I'm also linking to Anni's I'd-Rather-B-Birdin.
I noticed a white bird out the window yesterday, and wondered, "What the heck, is that a parakeet or something with those house sparrows (Passer domesticus)?" Then I put out some more seeds and set up the camera on the tripod. And the bird came back.
"In leucistic birds, affected plumage lacks melanin pigment due to the cells responsible for melanin production being absent. This results in a white feathers, unless the normal plumage colour also comprises carotenoids (e.g. yellows), which remain unaffected by the condition."
Some people say spotting one of these birds is lucky. Guess what, the sparrow was back again this morning (along with many friends). Maybe we can all be in luck!
Mouse over pics for captions, and click them for larger versions.