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- Title
Diet Comparison of Two Wintering Species of Owl in the Same Stand of Trees in Northern Illinois.
- Authors
Engel, Joshua I.; Dubey, Nandu; Gnoske, Thomas P.
- Abstract
We compared the diets of Northern Saw-whet and Long-eared Owls that roosted in the same stand of pine trees in Chain O'Lakes State Park, Illinois, in the winter of 1987-88. Through analysis of the contents of pellets that we collected at the end of the winter, we found that meadow vole (Microtus pennsylvanicus) was the most common prey item for both species of owls, followed by deer mouse (genus Peromyscus). The Saw-whet Owl also commonly preyed upon cinereus shew (Sorex cinereus). Results from this study provide insight on predator-prey relationships that may be useful for future studies on owl diet, small mammal populations, or habitat modification.
- Subjects
ILLINOIS; OWLS; BIRD food; PREDATION; SOREX cinereus; MICROTUS pennsylvanicus
- Publication
Transactions of the Illinois State Academy of Science, 2015, Vol 108, p17
- ISSN
0019-2252
- Publication type
Article