MESSAGES OF VERTEBRATE COMMUNICATION

[31] SMITH WH, IN PRESS

[32] VOCAL COMMUNICATION OF INFORMATION IN BIRDS [J]. AMERICAN NATURALIST, 1963, 97 (893) : 117 - &

[33] SMITH WJ, 1966, 6 NUTT ORN CLUB PUBL, P1

[34] SMITH WJ, 1968, ANIMAL COMMUNICATION

[35] SPARKS JOHN, 1967, P148

[36] STOKES ALLEN W., 1963, ANIMAL BEHAVIOUR, V11, P121, DOI 10.1016/0003-3472(63)90020-4

[37] STOKES ALLEN W., 1961, CONDOR, V63, P111, DOI 10.2307/1365525

[38] STOKES AW, 1967, AUK, V84, P1

[39] VAN HOOF J. A. R. A. M., 1967, P7

[40] WILLEMS EP, 1969, NATURALISTIC VIEW ED

[31] SMITH WH, IN PRESS

[32] VOCAL COMMUNICATION OF INFORMATION IN BIRDS [J]. AMERICAN NATURALIST, 1963, 97 (893) : 117 - &

[33] SMITH WJ, 1966, 6 NUTT ORN CLUB PUBL, P1

[34] SMITH WJ, 1968, ANIMAL COMMUNICATION

[35] SPARKS JOHN, 1967, P148

[36] STOKES ALLEN W., 1963, ANIMAL BEHAVIOUR, V11, P121, DOI 10.1016/0003-3472(63)90020-4

[37] STOKES ALLEN W., 1961, CONDOR, V63, P111, DOI 10.2307/1365525

[38] STOKES AW, 1967, AUK, V84, P1

[39] VAN HOOF J. A. R. A. M., 1967, P7

[40] WILLEMS EP, 1969, NATURALISTIC VIEW ED