“About one in 16 crows and black-capped chickadees suffer from a condition called avian keratin disorder, which causes their beaks to become morbidly elongated and crossed.
Rates of the debilitating disorder are 10 times higher than usual. That’s higher than has ever been recorded in any wild-bird population, and most of this rise happened over the last decade. Dozens of other bird species are afflicted. Nobody knows why, but it’s probably not a good sign.”
