Meet the “grue jay,” a rare offspring of a blue jay and a green jay—two common species whose evolutionary separation took place 7 million years ago. The resulting bird’s feathers are a muted, fashionable blue. But the marvelous discovery belies the fact that its existence may be the product of climate change’s threat to bird […]
Great Tits Sometimes Break Up, Bird Researchers Find
We’re talking about the birds. Great tits are small, yellowish songbirds common to the woodlands of Europe. Tit pairs are known to be monogamous during breeding season, splitting up after fully raising their offspring. But new research suggests that this “tit divorce” may be the product of complex social relationships formed during and after the […]