The Diet of the Great Gray Owl, Strix nebulosa, at Different Levels of Prey Abundance during the Nesting Season

Variation in the diet of the Great Gray Owl, a specialist predator, at different levels of prey abundance in different biotopes was studied in the middle Transural region. Microtus voles were found to be the main prey, with shrews being alternative prey. In different plots, two types of change in th...

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Bibliographic Details
Published in:Russian journal of ecology 2019, Vol.50 (1), p.43-49
Main Authors: Kropacheva, Yu. E., Smirnov, N. G., Zykov, S. V., Cheprakov, M. I., Sadykova, N. O., Bachurin, G. N.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Ecology
Environment
Life Sciences
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Summary:Variation in the diet of the Great Gray Owl, a specialist predator, at different levels of prey abundance in different biotopes was studied in the middle Transural region. Microtus voles were found to be the main prey, with shrews being alternative prey. In different plots, two types of change in the diet were observed during the nesting season: (1) substitution of Microtus voles inhabiting meadow biotopes by Microtus voles characteristic of forest habitats, and (2) substitution of the latter by shrews.
ISSN:1067-4136
1608-3334
DOI:10.1134/S1067413619010041