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Pseudo-egg and exotic egg adoption by Kelp Gulls Larus dominicanus vetula

Pseudo-egg and exotic egg adoption by Kelp Gulls Larus dominicanus vetula Ground-nesting birds, particularly larids, are known to include a variety of items in their nests as pseudo-eggs, as well as to adopt the eggs of conspecifics or other species. Three hypotheses have been put forward to explain this phenomenon: incubation stimulus, mistaken-food, and mistaken-egg hypotheses. Of 382 Kelp Gull Larus dominicanus vetula nests monitored during 2013/14, 11 instances of pseudo-egg (mostly driftwood and beef/ lamb bones), and one instance of exotic egg, adoption were recorded. A combination of all three hypotheses was attributed for the adoption of pseudo-eggs, whereas the exotic egg adoption could have been due to the need for incubation stimulus or a case of mistaken food. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Zoology Taylor & Francis

Pseudo-egg and exotic egg adoption by Kelp Gulls Larus dominicanus vetula

Witteveen, Minke; Brown, Mark; Ryan, Peter G
African Zoology , Volume 50 (1): 3 – Jan 2, 2015
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3 pages

Pseudo-egg and exotic egg adoption by Kelp Gulls Larus dominicanus vetula

Abstract

Ground-nesting birds, particularly larids, are known to include a variety of items in their nests as pseudo-eggs, as well as to adopt the eggs of conspecifics or other species. Three hypotheses have been put forward to explain this phenomenon: incubation stimulus, mistaken-food, and mistaken-egg hypotheses. Of 382 Kelp Gull Larus dominicanus vetula nests monitored during 2013/14, 11 instances of pseudo-egg (mostly driftwood and beef/ lamb bones), and one instance of exotic egg, adoption were...
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Publisher
Taylor & Francis
Copyright
Copyright © Zoological Society of Southern Africa
ISSN
2224-073X
eISSN
1562-7020
DOI
10.1080/15627020.2015.1021172
Publisher site
See Article on Publisher Site

Abstract

Ground-nesting birds, particularly larids, are known to include a variety of items in their nests as pseudo-eggs, as well as to adopt the eggs of conspecifics or other species. Three hypotheses have been put forward to explain this phenomenon: incubation stimulus, mistaken-food, and mistaken-egg hypotheses. Of 382 Kelp Gull Larus dominicanus vetula nests monitored during 2013/14, 11 instances of pseudo-egg (mostly driftwood and beef/ lamb bones), and one instance of exotic egg, adoption were recorded. A combination of all three hypotheses was attributed for the adoption of pseudo-eggs, whereas the exotic egg adoption could have been due to the need for incubation stimulus or a case of mistaken food.

Journal

African Zoology – Taylor & Francis

Published: Jan 2, 2015

Keywords: incubation stimulus; mistaken-egg hypothesis; mistaken-food hypothesis

References

  • Incubation and nest building behaviour of Black-headed Gulls. I: Incubation behaviour in the incubation period
  • Female Blackcap adoption of a Yellowhammer clutch
  • Brown Skuas Stercorarius antarcticus incubate a Macaroni Penguin Eudyptes chrysolophus egg at Marion Island
  • Foreign objects in bird nests
  • Stones: an important incubation stimulus for gulls and terns
  • Common Loon incubates rocks as surrogates for eggs
  • The frontline of avian brood parasite–host coevolution
  • A Black Swan incubating glass bottles
  • Objects incorporated within clutches of the Canada Goose
  • Unusual incubation: Long-billed Dowitcher incubates mammalian bones
  • Molecular evidence for extra-pair paternity and intraspecific brood parasitism in the Black-headed Gull
  • Pseudo-eggs of Brown Sula leucogaster and Blue-footed S. nebouxii Boobies in the Gulf of California, Mexico
  • Exotic eggs in nests of California Gulls
  • California Gulls and exotic eggs