| Publication Type: | Journal Article |
| Year of Publication: | 1978 |
| Authors: | Furness, RW |
| Journal: | Animal Behaviour |
| Volume: | 26 |
| Issue: | Part 4 |
| Date Published: | 1978 |
| ISBN Number: | 0003-3472 |
| Keywords: | Catharacta, Catharacta skua, Stercorariidae, Stercorarius, Stercorarius parasiticus, Stercorarius skua |
| Abstract: | Quantitative study of 467 great skua and 275 Arctic skua chases of seabirds at Foula, Shetland showed differences in the preferred victims and rates of success of each skua species. Spatial segregation of preferred victims reduces the possibility of interspecific competition. Several factors influence the outcome of chases; particularly important are the duration of chase, the speed of reaction of the victim and the method of evasion employed. These in turn are strongly influenced by local visibility and the height of the victim above the sea at the start of the chase. Variations in the success rates of chases between colonies are explained in terms of these relationships. |
| URL: | http://www.sciencedirect.com/science/article/pii/0003347278901070 |
| Short Title: | Animal Behaviour |
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