In at least one breed of northern seabird, the size of males' feather crests may be more than simple ornamentation. Crest size may be a physical indicator of a male crested auklet’s quality as a mate.

Fairbanks, Alaska—A newly released study by researchers at the University of Alaska Fairbanks offers evidence that in one breed of northern seabird, the size of males' feather crests may be more than ...

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