Observations of nonaggressive behavior between polar bear family groups

The behavior of 26 polar bears in and around the Churchill, Manitoba, garbage dump was observed in the autumn of 1983. Females with cubs were the most aggressive bears; all others avoided them. As the season progressed, two family groups began to associate with each other. One set of cubs were yearl...

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Bibliographic Details
Published in:Canadian Journal of Zoology
Main Author: Lunn, N. J.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1986
Subjects:
Online Access:http://dx.doi.org/10.1139/z86-307
http://www.nrcresearchpress.com/doi/pdf/10.1139/z86-307
Description
Summary:The behavior of 26 polar bears in and around the Churchill, Manitoba, garbage dump was observed in the autumn of 1983. Females with cubs were the most aggressive bears; all others avoided them. As the season progressed, two family groups began to associate with each other. One set of cubs were yearlings, the other set were cubs of the year. No aggression between these family groups was observed. Although females with cubs are generally intolerant of all other bears, they do interact nonaggressively. The function of these nonaggressive interactions is not clear at present but may illustrate the adaptability of polar bear behavior.