Polar Biology

, Volume 28, Issue 7, pp 571–573 | Cite as

Who’s the boss? Giant petrel arrival times and interspecific interactions at a seal carcass at sub-Antarctic Marion Island

  • P. J. N. de BruynEmail author
  • J. Cooper
Short Note


Most northern giant petrels Macronectes halli arrived before southern giant petrels Macronectes giganteus at a seal carcass at sub-Antarctic Marion Island and left earlier. In interspecific interactions, southern giant petrels initiated and dominated encounters. Level of aggression may be related to the degree of satiation. Dominance by southern giant petrels at seal carcasses may help explain why northern giant petrels commence breeding earlier than southern giant petrels in sympatric situations.


Interspecific Interaction Agonistic Interaction Elephant Seal Giant Petrel Southern Elephant Seal 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



The South African National Antarctic Programme, Department of Environmental Affairs and Tourism supplied financial and logistic support. Cheryl Tosh and three referees are thanked for their contributions.


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  1. 1.Mammal Research Institute Department of Zoology and EntomologyUniversity of PretoriaPretoriaSouth Africa
  2. 2.Avian Demography Unit Department of Statistical SciencesUniversity of Cape TownRondeboschSouth Africa

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