FLEXIBLE HELPER STRUCTURE AS AN ECOLOGICAL ADAPTATION IN THE PIED KINGFISHER (CERYLE-RUDIS-RUDIS L)

[11] DOUTHWAITE R J, 1973, Ostrich, V44, P89, DOI 10.1080/00306525.1973.9632621

[12] FISHING TECHNIQUES AND FOODS OF PIED KINGFISHER ON LAKE VICTORIA IN UGANDA [J]. OSTRICH, 1976, 47 (04) : 153 - 160

[13] DOUTHWAITE RJ, 1970, THESIS U E AFRICA

[14] Emlen S.T., 1978, P245

[15] EMLEN ST, 1980, NATURAL SELECTION SO

[16] Fry C.H., 1977, P127

[17] SOCIAL ORGANIZATION OF BEE-EATERS (MEROPIDAE) AND COOPERATIVE BREEDING IN HOT-CLIMATE BIRDS [J]. IBIS, 1972, 114 (01) : 1 - +

[18] GASTON A, 1975, EMU S, V74, P309

[19] INBREEDING AND DISPERSAL IN GREAT TIT [J]. NATURE, 1978, 271 (5640) : 52 - 54

[20] GRIMES L G, 1976, Ostrich, V47, P1, DOI 10.1080/00306525.1976.9639530

[11] DOUTHWAITE R J, 1973, Ostrich, V44, P89, DOI 10.1080/00306525.1973.9632621

[12] FISHING TECHNIQUES AND FOODS OF PIED KINGFISHER ON LAKE VICTORIA IN UGANDA [J]. OSTRICH, 1976, 47 (04) : 153 - 160

[13] DOUTHWAITE RJ, 1970, THESIS U E AFRICA

[14] Emlen S.T., 1978, P245

[15] EMLEN ST, 1980, NATURAL SELECTION SO

[16] Fry C.H., 1977, P127

[17] SOCIAL ORGANIZATION OF BEE-EATERS (MEROPIDAE) AND COOPERATIVE BREEDING IN HOT-CLIMATE BIRDS [J]. IBIS, 1972, 114 (01) : 1 - +

[18] GASTON A, 1975, EMU S, V74, P309

[19] INBREEDING AND DISPERSAL IN GREAT TIT [J]. NATURE, 1978, 271 (5640) : 52 - 54

[20] GRIMES L G, 1976, Ostrich, V47, P1, DOI 10.1080/00306525.1976.9639530