Male Ruddy Ducks Oxyura jamaicensis in Basic Plumage
10,000 Birds
MARCH 17, 2011
The variety of plumages that they show and the way different individuals molt at different times is interesting to me and I have stopped being surprised at seeing a small flock of ruddies with some nearly in full breeding, or alternate plumage, while others are still in their basic, or non-breeding plumage. The proposal from U.S.
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