{"fact":"Crows can adapt to living in laboratory settings, even without the ability to fly freely outdoors.","context":"Despite their close confinement and the lack of an out-of-door fly, the birds continued in excellent health and proved themselves able to withstand wholly satisfactorily the conditions of laboratory life.","source":"Charles A. Coburn; Robert M. Yerkes, A study of the behavior of the crow Corvus Americanus Aud. by the multiple choice method., 10.1037/h0076090","index":15}