The scientific genus name for a large group of nightjars, nocturnal insect-eating birds found across Africa, Europe, and Asia.
From Latin capra (goat) and mulgere (to milk). Ancient people mistakenly believed these birds visited goats at night to drink their milk.
The scientific name literally means 'goat milker,' preserving a 2,000-year-old misunderstanding about what these birds actually do—they never touch goats, just hunt insects.
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