If optimists see the world through rose-colored lenses, some birds see it through ultraviolet ones. Avians have evolved ultraviolet vision quite a few times in history, a new study finds. Birds depend ...
Jim Wilson/The New York Times. For some blind birders, avian soundscapes are a way to map the world around them. Increasing noise pollution is imperiling that navigation. By Alexandra Marvar Aug. 3, ...
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