This week's mystery was a toughie. The strangely plumaged bird I photographed with a bunch of House Finches on New Year's Day in DeKorte Park was .... a House Finch.

I know, it had a lot of yellowish orange feathers, but there's an explanation, here.

I wish my photo had been better but the bird could have been more cooperative.

(A thank you to Chris Takacs for pointing out the bird.)