Bird feathers appear to be simplistic structures, but a catalogue of chemicals and environmental contaminants resides deep inside them, scientists report. And these can be used to measure a bird's ...
Vanya, curator of birds and mammals at the Cornell University Museum of Vertebrates, studies a turkey vulture wing at the Cornell Lab of Ornithology. — Photos: BRYAN ANSELM/The New York Times Vanya ...
Feathers are among the most complex cutaneous appendages in the animal kingdom. While their evolutionary origin has been widely debated, paleontological discoveries and developmental biology studies ...
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