When a male Anna’s hummingbird pulls out of a courtship dive at roughly 60 miles per hour, the air ripping through his outer tail feathers produces a loud, sharp chirp. It is not a vocalization. No ...
Anna's hummingbird flying in the experimental setup, drinking sugar water from a fake flower. Credit: Lentink Lab / Stanford University. Anna's hummingbird flying in the experimental setup, drinking ...
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