Some ornithologists have very strong feelings about hyphens.
March 2, 2017 8:09 PM Subscribe
An ostrich is definitely not a bald eagle, nor is a Canada goose a mallard. But the closer you zoom, the fuzzier things get. Are the Striolated Puffbirds of the western Amazon who stutter at the start of their songs different enough from other Striolated Puffbirds to merit full species status? What is a species, exactly, and where do the lines between one and another lie?
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