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Effects of introducing foxes and raccoons on herring gull colonies

Journal of Wildlife Management

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Abstract

Red foxes (Vulpes fulva) and raccoons (Procyon lotor) released at colonies of herring gulls (Larus argentatus) on islands off the Massachusetts coast effectively eliminated the production of young gulls. Annual predator introductions for 2-4 years caused major reductions in colony size and occasionally total abandonment of the island as a colony site. Observations of the experimental islands for 2 years after cessation of predator introductions showed slow repopulation of the islands and lower breeding success than on control islands. The size of the regional population was reduced largely because of the movements of gulls off the experimental islands. The introduced predators are, in most cases, difficult to maintain on the islands; this restricts their utility in population management.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Effects of introducing foxes and raccoons on herring gull colonies
Series title:
Journal of Wildlife Management
Volume
35
Issue:
4
Year Published:
1971
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
625-636
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
625
Last page:
636
Number of Pages:
12