Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis

K EGUCHI, N Yamaguchi, Keisuke Ueda, H Nagata, K Takagi, Richard Noske

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    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.
    Original languageEnglish
    Pages (from-to)203-210
    Number of pages8
    JournalJournal für Ornithologie
    Volume148
    Publication statusPublished - 2007

    Fingerprint

    social structure
    group size
    tropics
    sex ratio
    gender
    birds
    breeding
    fledglings
    alloparental behavior
    nestlings
    reproductive success

    Cite this

    EGUCHI, K., Yamaguchi, N., Ueda, K., Nagata, H., Takagi, K., & Noske, R. (2007). Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis. Journal für Ornithologie, 148, 203-210.
    EGUCHI, K ; Yamaguchi, N ; Ueda, Keisuke ; Nagata, H ; Takagi, K ; Noske, Richard. / Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis. In: Journal für Ornithologie. 2007 ; Vol. 148. pp. 203-210.
    @article{e865b90417d644d588e3c2a3e8c51cf2,
    title = "Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis",
    abstract = "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.",
    keywords = "bird, cooperative breeding, eusociality, nestling, reproductive success, social structure, Australasia, Australia, Aves, Pomatostomus temporalis",
    author = "K EGUCHI and N Yamaguchi and Keisuke Ueda and H Nagata and K Takagi and Richard Noske",
    year = "2007",
    language = "English",
    volume = "148",
    pages = "203--210",
    journal = "Journal f{\~A}¼r Ornithologie",
    issn = "0021-8375",
    publisher = "Springer",

    }

    EGUCHI, K, Yamaguchi, N, Ueda, K, Nagata, H, Takagi, K & Noske, R 2007, 'Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis', Journal für Ornithologie, vol. 148, pp. 203-210.

    Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis. / EGUCHI, K; Yamaguchi, N; Ueda, Keisuke; Nagata, H; Takagi, K; Noske, Richard.

    In: Journal für Ornithologie, Vol. 148, 2007, p. 203-210.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis

    AU - EGUCHI, K

    AU - Yamaguchi, N

    AU - Ueda, Keisuke

    AU - Nagata, H

    AU - Takagi, K

    AU - Noske, Richard

    PY - 2007

    Y1 - 2007

    N2 - 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.

    AB - 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.

    KW - bird

    KW - cooperative breeding

    KW - eusociality

    KW - nestling

    KW - reproductive success

    KW - social structure

    KW - Australasia

    KW - Australia

    KW - Aves

    KW - Pomatostomus temporalis

    M3 - Article

    VL - 148

    SP - 203

    EP - 210

    JO - Journal für Ornithologie

    JF - Journal für Ornithologie

    SN - 0021-8375

    ER -

    EGUCHI K, Yamaguchi N, Ueda K, Nagata H, Takagi K, Noske R. Social structure and helping behaviour of the Grey-crowned Babbler Pomatostomus temporalis. Journal für Ornithologie. 2007;148:203-210.