{"fact":"Even though crows usually leave home by winter, Swiss crows raised in Spain stayed on their adopted families' territories for at least a year.","context":"Conversely, in Spain, all but one of the six surviving transplanted juveniles remained on their natal territories through their first year of life (figure 1).","source":"Vittorio Baglione; Daniela Canestrari; José M. Marcos; Michael Griesser; Jan Ekman, History, environment and social behaviour: experimentally induced cooperative breeding in the carrion crow, 10.1098/rspb.2002.2016","index":50}