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Prenatal experience and avian development: brief auditory stimulation accelerates the hatching of Japanese quail.

A single 2-hour exposure to auditory stimulation at any point during the final 3 days of incubation accelerates the hatching of Japanese quail. The 3-day sensitive period includes both prenatal and perinatal stages of incubation. So far as is known these results provide the first unequivocal evidence that short-term prenatal sensory stimulation can affect the development of an avian embryo.