Can you identify this species and its European sister species, and tell me which plumage cycle it is in?Mystery Bird photographed Bon Secour National Wildlife Refuge, Alabama, USA. [I will identify this bird for you in 48 hours]Image: Terry Sohl, 13 February 2008 [larger view].Canon 20D, 400 5.6LThis North American species is often treated as a subspecies of its European "sister" but is now regarded as a separate species by some authorities. You might be surprised to learn that its European sister species is a red list species of conservation concern in the UK because its population has declined by more than half in the last 25 years. Can you identify this species and its European sister species, and tell me which plumage cycle it is in?Daily Mystery Bird Rules: 1. Please name at least one field mark that supports your identification, keeping in mind that more than one field...
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