Sex selection creates distinct hummingbird species on small Jamaican island

PHYSorg
Apr 15, 2025, 10:50 am356 pts
There are two species of streamertail hummingbirds on the island of Jamaica, West Indies—one with red-billed males (Trochilus polytmus) and the other with black-billed males (T. scitulus). This is a puzzling situation, as many evolutionary biologists have argued that avian speciation is unlikely to occur on…

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