Birds worldwide share a unique alarm call to warn each other about brood parasites like cuckoos. This vocalization, a blend ...
Smithsonian Magazine on MSN
Birds Make an Alarm Call That Spans Species and Continents—and May Offer Insight Into the Evolution of Human Language
More than 20 species make a nearly identical noise to warn nearby birds of brood parasites, a behavior that bridges the ...
Crows are highly intelligent. They can recognize faces, hold grudges, and even recognize cars. Crows cache food, and will move it if another creature sees them hiding it. They use tools, and fashion ...
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