The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology
In Slovenia the Ural Owl, Strix uralensis macroura, is on the north-western limit of its distribution with an estimated population size of 400-700 breeding pairs. The densities of territories range between 0.9 to 13.4 territories per 10 km2, and the highest densities are reached in montane forests o...
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ftdoajarticles:oai:doaj.org/article:455a3533ea254bd5a81b80d28a3158e1 2023-05-15T18:27:33+02:00 The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology Al Vrezec Tomaž Mihelič 2012-09-01T00:00:00Z https://doi.org/10.4081/rio.2012.107 https://doaj.org/article/455a3533ea254bd5a81b80d28a3158e1 EN IT eng ita PAGEPress Publications https://sisn.pagepress.org/index.php/rio/article/view/107 https://doaj.org/toc/0035-6875 https://doaj.org/toc/2385-0833 doi:10.4081/rio.2012.107 0035-6875 2385-0833 https://doaj.org/article/455a3533ea254bd5a81b80d28a3158e1 Rivista Italiana di Ornitologia - Research in Ornithology, Vol 82, Iss 1-2 (2012) Strix uralensis macroura Slovenia distribution breeding density habitat breeding biology Zoology QL1-991 article 2012 ftdoajarticles https://doi.org/10.4081/rio.2012.107 2022-12-30T22:16:24Z In Slovenia the Ural Owl, Strix uralensis macroura, is on the north-western limit of its distribution with an estimated population size of 400-700 breeding pairs. The densities of territories range between 0.9 to 13.4 territories per 10 km2, and the highest densities are reached in montane forests of the southern Dinaric region. In the forests with dominant deciduous trees, e.g. Fagus sylvatica and Quercus robur, the breeding densities are significantly higher than in the forests with a higher proportion of coniferous trees, e.g. Picea abies. The species does not select specific altitude and throughout Slovenia it occurs between 150 and 1600 m a.s.l. Most natural nests were found in tree holes or semi-holes (56%) and on the tree stumps (20%). Breeding begins between 15 March to 21 June with median clutch sizes of 3.0 eggs per nest. In the brood there are 2 young and 1.5 young are fledged in median. At present 75% of nests produce at least one young. Voles and Mice are the most frequent prey in the diet, but the Fat Dormouse, Glis glis, seems to have very important role in the post-breeding period. As a top predator, the Ural Owl influences also the distribution of other owl species in the guild through direct predation or competitive exclusion. However, it could have also a positive indirect effect on smaller species, e.g. Tengmalm’s Owl, Aegolius funereus, which are tolerated within Ural Owl territories, and are able to extend their distribution due to exclusion from certain areas of the Tawny Owl, Strix aluco, by the Ural Owl. Article in Journal/Newspaper Strix uralensis Ural Owl Directory of Open Access Journals: DOAJ Articles Rivista Italiana di Ornitologia 82 1/2 |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Italian |
topic |
Strix uralensis macroura Slovenia distribution breeding density habitat breeding biology Zoology QL1-991 |
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Strix uralensis macroura Slovenia distribution breeding density habitat breeding biology Zoology QL1-991 Al Vrezec Tomaž Mihelič The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
topic_facet |
Strix uralensis macroura Slovenia distribution breeding density habitat breeding biology Zoology QL1-991 |
description |
In Slovenia the Ural Owl, Strix uralensis macroura, is on the north-western limit of its distribution with an estimated population size of 400-700 breeding pairs. The densities of territories range between 0.9 to 13.4 territories per 10 km2, and the highest densities are reached in montane forests of the southern Dinaric region. In the forests with dominant deciduous trees, e.g. Fagus sylvatica and Quercus robur, the breeding densities are significantly higher than in the forests with a higher proportion of coniferous trees, e.g. Picea abies. The species does not select specific altitude and throughout Slovenia it occurs between 150 and 1600 m a.s.l. Most natural nests were found in tree holes or semi-holes (56%) and on the tree stumps (20%). Breeding begins between 15 March to 21 June with median clutch sizes of 3.0 eggs per nest. In the brood there are 2 young and 1.5 young are fledged in median. At present 75% of nests produce at least one young. Voles and Mice are the most frequent prey in the diet, but the Fat Dormouse, Glis glis, seems to have very important role in the post-breeding period. As a top predator, the Ural Owl influences also the distribution of other owl species in the guild through direct predation or competitive exclusion. However, it could have also a positive indirect effect on smaller species, e.g. Tengmalm’s Owl, Aegolius funereus, which are tolerated within Ural Owl territories, and are able to extend their distribution due to exclusion from certain areas of the Tawny Owl, Strix aluco, by the Ural Owl. |
format |
Article in Journal/Newspaper |
author |
Al Vrezec Tomaž Mihelič |
author_facet |
Al Vrezec Tomaž Mihelič |
author_sort |
Al Vrezec |
title |
The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
title_short |
The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
title_full |
The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
title_fullStr |
The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
title_full_unstemmed |
The Ural owl, Strix uralensis macroura, in Slovenia: an overview of current knowledge on species ecology |
title_sort |
ural owl, strix uralensis macroura, in slovenia: an overview of current knowledge on species ecology |
publisher |
PAGEPress Publications |
publishDate |
2012 |
url |
https://doi.org/10.4081/rio.2012.107 https://doaj.org/article/455a3533ea254bd5a81b80d28a3158e1 |
genre |
Strix uralensis Ural Owl |
genre_facet |
Strix uralensis Ural Owl |
op_source |
Rivista Italiana di Ornitologia - Research in Ornithology, Vol 82, Iss 1-2 (2012) |
op_relation |
https://sisn.pagepress.org/index.php/rio/article/view/107 https://doaj.org/toc/0035-6875 https://doaj.org/toc/2385-0833 doi:10.4081/rio.2012.107 0035-6875 2385-0833 https://doaj.org/article/455a3533ea254bd5a81b80d28a3158e1 |
op_doi |
https://doi.org/10.4081/rio.2012.107 |
container_title |
Rivista Italiana di Ornitologia |
container_volume |
82 |
container_issue |
1/2 |
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1766209682476630016 |