ORIGINS OF VOCAL LEARNING

[1] AMES PL, 1971, 37 PEAB MUS NAT HIST

[2] Armstrong EA, 1963, STUDY BIRD SONG

[3] AUSTIN OL, 1961, BIRDS OF WORLD

[4] LAUGHING GULL CHICKS - RECOGNITION OF THEIR PARENTS VOICES [J]. SCIENCE, 1969, 166 (3908) : 1030 - &

[5] BERTRAM B, 1970, ANIM BEHAV

[6] Blase B., 1960, Zeitschrift fuer Tierpsychologie, V17, P293

[7] BORROR DJ, 1956, MASS AUDUBON SOC B, V40, P245

[8] BORROR DJ, 1956, MASS AUDUBON SOC B, V40, P309

[9] BROCKWAY BF, 1969, BIRD VOCALIZATIONS

[10] CARPENTER CR, 1934, 10 COMP PSYCH MON

[1] AMES PL, 1971, 37 PEAB MUS NAT HIST

[2] Armstrong EA, 1963, STUDY BIRD SONG

[3] AUSTIN OL, 1961, BIRDS OF WORLD

[4] LAUGHING GULL CHICKS - RECOGNITION OF THEIR PARENTS VOICES [J]. SCIENCE, 1969, 166 (3908) : 1030 - &

[5] BERTRAM B, 1970, ANIM BEHAV

[6] Blase B., 1960, Zeitschrift fuer Tierpsychologie, V17, P293

[7] BORROR DJ, 1956, MASS AUDUBON SOC B, V40, P245

[8] BORROR DJ, 1956, MASS AUDUBON SOC B, V40, P309

[9] BROCKWAY BF, 1969, BIRD VOCALIZATIONS

[10] CARPENTER CR, 1934, 10 COMP PSYCH MON