Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland
The diets of the breeding Tengmalm's Owl and Ural Owl were studied in Central Finland in 1976-84. Ural Owls used more voles than Tengmalm's Owls, 92 % and 74 %, respectively . The most important prey species of the Ural Owl was Arvicola terrestris and those of the Tengmalm's Owl were...
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BirdLife Finland
1987
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fttsvojs:oai:journal.fi:article/133246 2023-09-05T13:23:35+02:00 Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland Jäderholm, K. 1987-12-31 application/pdf https://ornisfennica.journal.fi/article/view/133246 eng eng BirdLife Finland https://ornisfennica.journal.fi/article/view/133246/81792 https://ornisfennica.journal.fi/article/view/133246 Ornis Fennica; Vol 64 Nro 4 (1987); 149–153 Ornis Fennica; Vol. 64 No. 4 (1987); 149–153 0030-5685 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 1987 fttsvojs 2023-08-23T23:02:34Z The diets of the breeding Tengmalm's Owl and Ural Owl were studied in Central Finland in 1976-84. Ural Owls used more voles than Tengmalm's Owls, 92 % and 74 %, respectively . The most important prey species of the Ural Owl was Arvicola terrestris and those of the Tengmalm's Owl were Clethrionomys voles and Microtus agreslis . The annual variation in food composition was larger in the Tengmalm's Owl than in the Ural Owl. Fluctuations in the numbers of breeding Ural Owls were, and the numbers of breeding Tengmalm's Owls were not correlated with the numbers of voles eaten. Breeding success, estimated by the number of fledglings, was dependent on the proportion of voles in the diet . Article in Journal/Newspaper Strix uralensis Ural Owl Federation of Finnish Learned Societies: Scientific Journals Online |
institution |
Open Polar |
collection |
Federation of Finnish Learned Societies: Scientific Journals Online |
op_collection_id |
fttsvojs |
language |
English |
description |
The diets of the breeding Tengmalm's Owl and Ural Owl were studied in Central Finland in 1976-84. Ural Owls used more voles than Tengmalm's Owls, 92 % and 74 %, respectively . The most important prey species of the Ural Owl was Arvicola terrestris and those of the Tengmalm's Owl were Clethrionomys voles and Microtus agreslis . The annual variation in food composition was larger in the Tengmalm's Owl than in the Ural Owl. Fluctuations in the numbers of breeding Ural Owls were, and the numbers of breeding Tengmalm's Owls were not correlated with the numbers of voles eaten. Breeding success, estimated by the number of fledglings, was dependent on the proportion of voles in the diet . |
format |
Article in Journal/Newspaper |
author |
Jäderholm, K. |
spellingShingle |
Jäderholm, K. Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
author_facet |
Jäderholm, K. |
author_sort |
Jäderholm, K. |
title |
Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
title_short |
Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
title_full |
Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
title_fullStr |
Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
title_full_unstemmed |
Diets of the Tengmalm´s Owl Aegolius funereus and the Ural Owl Strix uralensis in Central Finland |
title_sort |
diets of the tengmalm´s owl aegolius funereus and the ural owl strix uralensis in central finland |
publisher |
BirdLife Finland |
publishDate |
1987 |
url |
https://ornisfennica.journal.fi/article/view/133246 |
genre |
Strix uralensis Ural Owl |
genre_facet |
Strix uralensis Ural Owl |
op_source |
Ornis Fennica; Vol 64 Nro 4 (1987); 149–153 Ornis Fennica; Vol. 64 No. 4 (1987); 149–153 0030-5685 |
op_relation |
https://ornisfennica.journal.fi/article/view/133246/81792 https://ornisfennica.journal.fi/article/view/133246 |
_version_ |
1776204175244263424 |