Social and mating system of cooperatively breeding laughing kookaburras (Dacelo novaeguineae)

  title={Social and mating system of cooperatively breeding laughing kookaburras (Dacelo novaeguineae)},
  author={Sarah M. Legge and Andrew Cockburn},
  journal={Behavioral Ecology and Sociobiology},
Abstract DNA fingerprinting was combined with field observations over four breeding seasons to investigate the social structure and mating system of the laughing kookaburra (Dacelo novaeguineae). Groups comprised a socially dominant pair and up to six helpers of either sex. Helpers were always recruited from young hatched in the group. Territorial inheritance, which is a feature of other cooperative breeders and an oft-cited benefit of philopatry, did not occur. Helpers only attained dominant… 
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  • Environmental Science
    Behavioral Ecology and Sociobiology
  • 2000
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DNA fingerprinting used to examine the genetic parentage and mating system of the cooperatively breeding white-browed scrubwren, Sericornis frontalis, in Canberra, Australia revealed a remarkable variety of mating tactics and social organization.
Single- and multilocus DNA fingerprinting of communally breeding pukeko: do copulations or dominance ensure reproductive success?
It is concluded that pukeko highlight some difficulties with conventional explanations for the "function" of dominance, and instances of males which are high on the dominance hierarchy but have only a limited reproductive output in comparison with others and malesWhich are subordinate but achieve a significant proportion of fertilizations are reported.
Reproductive Roles in the Cooperatively Breeding Acorn Woodpecker: Incest Avoidance versus Reproductive Competition
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  • Environmental Science
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Copulatory behaviour and paternity determined by DNA fingerprinting in kestrels: effects of cyclic food abundance
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Helpers Have Little to Laugh About: Group Structure and Vocalisation in the Laughing Kookaburra Dacelo novaeguineae
It is concluded that the Kookaburras's laugh song signals aggression and aids in (a) defending a temtory, (b) guarding the mate and (c) establishing and maintaining a dominance hierarchy between breeders and helpers.