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Photographs of the three North American scoters (Melanitta sp.): black scoter (a; M. americana), surf scoter (b; M. perspicillata), and white‐winged scoter (c; M. deglandi). Photo credits: R. Askren (US Geological Survey) and A. Wilson (Nature's Pics Online, made available under CC BY‐SA 3.0 license)
