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    Author(s): Alexey K. Tishechkin; Wassilij W. Gritschik; Valery N. Vorobiov; Gennady A. Mindlin
    Date: 1997
    Source: In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 449-455.
    Publication Series: General Technical Report (GTR)
    Station: North Central Research Station
    PDF: View PDF  (104.26 KB)

    Description

    A nearly isolated Great Gray Owl (Strix nebulosa Forster) population of 50-100 breeding pairs exists in southwestern and south-central Belarus and northern Ukraine. It exhibits rather high nesting density in particular forest tracts and is separated from populations in northwestern Russia by several hundred kilometers. No reliable data on residency, postbreeding movements and wintering strategies are available. Twig nests are used for nesting almost exclusively; the proportion of other nest sites was ca. 10 per cent. Mean clutch size was 3.4, with 1.3 young produced per breeding attempt. The main adverse factor affecting the population seems to be illegal shooting by local hunters.

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    Citation

    Tishechkin, Alexey K.; Gritschik, Wassilij W.; Vorobiov, Valery N.; Mindlin, Gennady A. 1997. Breeding population of the Great Gray Owl (Strix nebulosa Forster) in Belarus: summary of recent knowledge. In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 449-455.

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