caa a22 4500 463175867 CHVBK 20180406164825.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10336-007-0196-3 doi (NATIONALLICENCE)springer-10.1007/s10336-007-0196-3 Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis [Elektronische Daten] [Kazuhiro Eguchi, Noriyuki Yamaguchi, Keisuke Ueda, Hisashi Nagata, Masaoki Takagi, Richard Noske] A 4-year study of cooperative breeding in the Grey-crowned Babbler Pomatostomus temporalis was conducted in the monsoon-tropics of northern Australia. Most groups comprised a single socially monogamous pair with up to seven helpers. We found no floaters. The sex ratio was almost unity for each year. Helpers included philopatric offspring, immigrating juveniles and immigrating sexually mature birds. Adults of both sexes moved frequently between groups. Pairs without helpers were unable to raise young to fledging and often divorced, suggesting that cooperative breeding was obligatory in this population. However, for groups with helpers, the group size effect was weak; there was no significant correlation between the number of fledglings and number of helpers. Breeding females exclusively contributed to incubation. Breeders contributed more to provisioning of nestlings than non-breeders. Although helpers did not enhance the total provisioning rate to nestlings, small groups should recruit helpers to maintain the group and enhance reproductive success. Dt. Ornithologen-Gesellschaft e.V., 2007 Cooperative breeding nationallicence Grey-crowned babbler nationallicence Helper nationallicence Helping nationallicence Reproductive success nationallicence Eguchi Kazuhiro Department of Biology, Faculty of Science, Kyushu University, 812-8581, Fukuoka, Japan aut Yamaguchi Noriyuki Faculty of Environment and Information Sciences, Yokohama National University, Tokiwadai 79-7, 240-8501, Hodogaya, Kanagawa, Japan aut Ueda Keisuke Department of Life Sciences, Faculty of Science, Rikkyo University, Nishi-Ikebukuro 3-31-1, 171-8501, Toshima, Tokyo, Japan aut Nagata Hisashi Laboratory of Wildlife Conservation, National Institute for Environmental Studies, Onogawa 16-2, 305-8506, Tsukuba, Ibaraki, Japan aut Takagi Masaoki Department of Biology, Osaka City University, Sugimoto 3-3-138, 558-8585, Sumiyoshi, Osaka, Japan aut Noske Richard School of Science and Primary Industries, Charles Darwin University, 0909, Darwin, NT, Australia aut Journal of Ornithology Springer-Verlag 148(2007-12-01), 203-210 0021-8375 148<203 2007 148 10336 https://doi.org/10.1007/s10336-007-0196-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-007-0196-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Eguchi Kazuhiro Department of Biology, Faculty of Science, Kyushu University, 812-8581, Fukuoka, Japan aut NATIONALLICENCE 700 1- Yamaguchi Noriyuki Faculty of Environment and Information Sciences, Yokohama National University, Tokiwadai 79-7, 240-8501, Hodogaya, Kanagawa, Japan aut NATIONALLICENCE 700 1- Ueda Keisuke Department of Life Sciences, Faculty of Science, Rikkyo University, Nishi-Ikebukuro 3-31-1, 171-8501, Toshima, Tokyo, Japan aut NATIONALLICENCE 700 1- Nagata Hisashi Laboratory of Wildlife Conservation, National Institute for Environmental Studies, Onogawa 16-2, 305-8506, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Takagi Masaoki Department of Biology, Osaka City University, Sugimoto 3-3-138, 558-8585, Sumiyoshi, Osaka, Japan aut NATIONALLICENCE 700 1- Noske Richard School of Science and Primary Industries, Charles Darwin University, 0909, Darwin, NT, Australia aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148(2007-12-01), 203-210 0021-8375 148<203 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer