Add Yahoo as a preferred source to see more of our stories on Google. The wonderful sound of birdsong is one of nature's most purest pleasures. However, some birds have taken it to the extreme. Meet ...
WASHINGTON (AP) — Perched on a flowering shrub on a windy Andean mountainside, the tiny Ecuadorian Hillstar hummingbird chirps songs of seduction that only another bird of its kind can hear. As the ...
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