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Three-in-one Warbler
9 Nov 2018, 6:08 PM,
Three-in-one Warbler
[Image: ykbwyyuv6xts9szzitpo.jpg]
Golden-winged x Blue-winged (Brewster's) x Chestnut-sided Warbler

Link to Story

“It tells us that warblers in general appear to be reproductively compatible over millions of years of independent evolution,” Dave Toews, postdoctoral associate at the Cornell Lab of Ornithology, told Gizmodo. “The things that really define them, their distinct colors and their songs, are likely mating barriers, and that they don’t interbreed because they can’t, but because they choose not to.”

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