Marler 1970 white-crowned sparrow: critical-period (10-50 days) for tutor-song learning; sensorimotor template; cross-fostered birds learn alien song; analogous to human language acquisition.
Marler 1970 white-crowned sparrow: critical-period (10-50 days) for tutor-song learning; sensorimotor template; cross-fostered birds learn alien song; analogous to human language acquisition.