Early birds: sweeping new study reveals when birds of a feather appeared altogether

Exhaustive global analysis finds avian ancestors first appeared within 5 million years of dinosaur extinction.

Early birds: sweeping new study reveals when birds of a feather appeared altogether

Early birds: sweeping new study reveals when birds of a feather appeared altogether

Early birds: sweeping new study reveals when birds of a feather appeared altogether

Early birds: sweeping new study reveals when birds of a feather appeared altogether
Early birds: sweeping new study reveals when birds of a feather appeared altogether
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