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Raptor and Vole Populations at an Airport
Publication Type: | Journal Article |
Year of Publication: | 1981 |
Authors: | Baker, JA, BROOKS, RONALDJ |
Journal: | The Journal of Wildlife Management |
Volume: | 45 |
Issue: | 2 |
Date Published: | 1981 |
ISBN Number: | 0022541X |
Keywords: | Accipitridae, Asio, Asio flammeus, Bubo, Bubo scandiacus, Buteo, Buteo jamaicensis, Buteo lagopus, Nyctea, Nyctea scandiaca, Strigidae |
Abstract: | Changes in numbers among overwintering populations of 4 species of raptors were studied in relation to changes in abundance of meadow voles (Microtus pennsylvanicus) on Toronto International Airport from October to April of 1974-75 and 1975-76. Data from small-mammal trapping, analysis of raptor pellets, and direct observations of prey hunted and captured by the raptors indicated that meadow voles were the major prey of all 4 raptor species. Rough-legged hawks (Buteo lagopus) and short-eared owls (Asio flammeus) exhibited a greater numerical response to changes in vole abundance than did redtailed hawks (Buteo jamaicensis). Changes in snowy owl (Nyctea scandiaca) numbers were opposite those of the other raptors. |
URL: | http://www.jstor.org/stable/3807920 |
Short Title: | The Journal of Wildlife Management |
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith