The findings appear in the Proceedings of the Royal Society B journal. The loud chirp sound is produced by male Anna's hummingbirds (Calypte anna) as the birds dive towards the ground at speeds that ...
Christopher Clark went to Strawberry Canyon in Berkeley and got a bad case of poison oak. Then he tried a shoreline park in Albany, where his camera was stolen and sopping-wet dogs covered his field ...
The chirps and beeps of hummingbirds at times come from their tails. Male Anna's hummingbirds — the West Coast's most common hummingbird — perform spectacular dive-bomber displays for females during ...
WASHINGTON: 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 male ...
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