Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia
The influence of weather conditions on the winter diet of the Long-eared Owl was studied in 2005-2013 at one roost site in Moscow, Russia. Pellets were collected every week from November to March. The diet composition of the owls included 6 rodent species, 2 in-sectivore species and 18 bird species....
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BirdLife Finland
2014
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fttsvojs:oai:journal.fi:article/133848 2023-09-05T13:18:54+02:00 Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia Sharikov, Alexander Makarova, Tatiana 2014-07-01 application/pdf https://ornisfennica.journal.fi/article/view/133848 eng eng BirdLife Finland https://ornisfennica.journal.fi/article/view/133848/82400 https://ornisfennica.journal.fi/article/view/133848 Ornis Fennica; Vol 91 Nro 2 (2014); 100–107 Ornis Fennica; Vol. 91 No. 2 (2014); 100–107 0030-5685 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2014 fttsvojs 2023-08-23T23:03:11Z The influence of weather conditions on the winter diet of the Long-eared Owl was studied in 2005-2013 at one roost site in Moscow, Russia. Pellets were collected every week from November to March. The diet composition of the owls included 6 rodent species, 2 in-sectivore species and 18 bird species. Common Vole was by far the most frequent prey (70.0%), followed by Ural Field Mouse (10.8%) and Brown Rat (7.5%). Among birdprey (5.3%), House Sparrow, Great Tit, Bullfinch, Tree Sparrow and Blue Tit were the most numerous species. The winter diet showed marked interannual fluctuations. In terms of weather conditions, depth of snow cover appears to be the most important factor affecting the availability of the most frequent prey species and prey groups in the diet of the Long-eared Owl. Wind speed and precipitation do not play a significant role in predating on voles and mice. The proportion of bird prey was relatively low, but increased with precipitation, indicating the high importance of birds as an alternative prey for owls. The results thus suggest that specific features of behavior and activity of prey in different weather conditions explain their proportions in the diet of the Long-eared Owl. Article in Journal/Newspaper Common vole Federation of Finnish Learned Societies: Scientific Journals Online |
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Open Polar |
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Federation of Finnish Learned Societies: Scientific Journals Online |
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fttsvojs |
language |
English |
description |
The influence of weather conditions on the winter diet of the Long-eared Owl was studied in 2005-2013 at one roost site in Moscow, Russia. Pellets were collected every week from November to March. The diet composition of the owls included 6 rodent species, 2 in-sectivore species and 18 bird species. Common Vole was by far the most frequent prey (70.0%), followed by Ural Field Mouse (10.8%) and Brown Rat (7.5%). Among birdprey (5.3%), House Sparrow, Great Tit, Bullfinch, Tree Sparrow and Blue Tit were the most numerous species. The winter diet showed marked interannual fluctuations. In terms of weather conditions, depth of snow cover appears to be the most important factor affecting the availability of the most frequent prey species and prey groups in the diet of the Long-eared Owl. Wind speed and precipitation do not play a significant role in predating on voles and mice. The proportion of bird prey was relatively low, but increased with precipitation, indicating the high importance of birds as an alternative prey for owls. The results thus suggest that specific features of behavior and activity of prey in different weather conditions explain their proportions in the diet of the Long-eared Owl. |
format |
Article in Journal/Newspaper |
author |
Sharikov, Alexander Makarova, Tatiana |
spellingShingle |
Sharikov, Alexander Makarova, Tatiana Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
author_facet |
Sharikov, Alexander Makarova, Tatiana |
author_sort |
Sharikov, Alexander |
title |
Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
title_short |
Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
title_full |
Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
title_fullStr |
Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
title_full_unstemmed |
Weather conditions explain variation in the diet of Long-eared Owl at winter roost in central part of European Russia |
title_sort |
weather conditions explain variation in the diet of long-eared owl at winter roost in central part of european russia |
publisher |
BirdLife Finland |
publishDate |
2014 |
url |
https://ornisfennica.journal.fi/article/view/133848 |
genre |
Common vole |
genre_facet |
Common vole |
op_source |
Ornis Fennica; Vol 91 Nro 2 (2014); 100–107 Ornis Fennica; Vol. 91 No. 2 (2014); 100–107 0030-5685 |
op_relation |
https://ornisfennica.journal.fi/article/view/133848/82400 https://ornisfennica.journal.fi/article/view/133848 |
_version_ |
1776199745641906176 |