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- Title
Additional Data and Perspectives on Interspecific Aggression in the Common Loon, Gavia immer.
- Authors
MORTON, MARTIN L.; PEREYRA, MARIA E.
- Abstract
We witnessed the killing of a female Redhead (Aythya Americana) by a male Common Loon (Gavia immer). The wound was delivered into the abdomen from below, and death occurred because of a torn, hemorrhaging liver. This same Common Loon also threatened a female Ring-necked Duck (Aythya collaris) with ducklings. We hypothesize that interspecific aggression by loons might be energetically costly but is sometimes adaptive because it deters predators.
- Subjects
BRITISH Columbia; ANIMAL attacks; COMMON loon; ANIMAL aggression; REDHEAD (Bird); RING-necked duck
- Publication
Canadian Field-Naturalist, 2011, Vol 125, Issue 1, p61
- ISSN
0008-3550
- Publication type
Article
- DOI
10.22621/cfn.v125i1.1127