EFFECTS OF CASTRATION ON SONG DEVELOPMENT IN ZEBRA FINCHES (POEPHILA-GUTTATA)

[21] Thorpe W, 1961, BIRD SONG

[22] THORPE W. H., 1958, IBIS, V100, P535, DOI 10.1111/j.1474-919X.1958.tb07960.x

[23] FURTHER STUDIES ON THE PROCESS OF SONG LEARNING IN THE CHAFFINCH (FRINGILLA-COELEBS-GENGLERI) [J]. NATURE, 1958, 182 (4635) : 554 - 557

[24] Witschi E., 1961, BIOL COMP PHYSL BIRD, P115

[21] Thorpe W, 1961, BIRD SONG

[22] THORPE W. H., 1958, IBIS, V100, P535, DOI 10.1111/j.1474-919X.1958.tb07960.x

[23] FURTHER STUDIES ON THE PROCESS OF SONG LEARNING IN THE CHAFFINCH (FRINGILLA-COELEBS-GENGLERI) [J]. NATURE, 1958, 182 (4635) : 554 - 557

[24] Witschi E., 1961, BIOL COMP PHYSL BIRD, P115