Publication Type: | Journal Article |
Year of Publication: | 1986 |
Authors: | Wiklund, CG, Stigh, J |
Journal: | Ornis Scandinavica |
Volume: | 17 |
Issue: | 3 |
Date Published: | 1986 |
ISBN Number: | 00305693 |
Keywords: | Bubo, Bubo scandiacus, Nyctea, Nyctea scandiaca, Strigidae |
Abstract: | Rodents and Snowy Owls varied synchronously in numbers during a 5-yr period that included two peaks in rodent density. The owls bred in three areas with many hillocks and boulders. More nests were on hillocks than boulders, and high places were used as perches. During the second rodent peak year, when snow reduced access to food and suitable nest sites, owl breeding density was lower and territories were larger. Fledgling production was not, however, significantly lower, perhaps indicating that the larger territory sizes to some extent may have compensated for a lower availability of rodents. |
URL: | http://www.jstor.org/stable/3676837 |
Short Title: | Ornis Scandinavica |
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