Species and sexual isolating mechanisms in sibling species of giant petrels Macronectes

@article{Hunter1987SpeciesAS,
  title={Species and sexual isolating mechanisms in sibling species of giant petrels Macronectes},
  author={Stephen Hunter},
  journal={Polar Biology},
  year={1987},
  volume={7},
  pages={295-301}
}
The two sibling species of giant petrels Macronectes halli and M. giganteus are the dominant avian scavengers in the Southern Ocean ecosystem. They breed sympatrically at a number of sub-Antarctic sites. This paper synthesises data from a detailed study at South Georgia to examine the importance of various interspecific and intersexual differences between these closely related species. Morphological, breeding, dietary, feeding and moult characteristics were investigated. The most significant… CONTINUE READING
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Plumages and Bill Colouration M. giganteus has two colour phases - a white and a dark phase. M. halli has no white phase. Dark phase juveniles of both species

  • commun, Johnstone
  • 1981

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