Materials on number of the Long-eared Owl in Kolchugino district of Vladimir region in July 2007. - A.A. Shamshin, M.V. Tsiganova. - Avifauna of Ukraine. 4. 2008. - P. 69-70.
A local increasing of population density is described. 22 owls were counted in 20 km of an asphalt road. Apparently these were young birds hunted on the road with low intensity of traffic. [Russian].
Key words: Long-eared Owl, Asio otus, number, count.
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