Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures.
When Snowy Owls (Bubo scandiacus) turned up in Finnmark, northern Norway in summer 1993, a vole lure on a line was used to test if the owls would detect, approach and attack the lure in the same way that Great Grey Owls (Strix nebulosa) do (Nero 1980). When a Snowy Owl was spotted more than 100 m aw...
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Portuguese Society for the Study of Birds (C.E.M.P.A.)
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ftagderuniv:oai:uia.brage.unit.no:11250/3133115 2024-06-23T07:51:52+00:00 Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. Solheim, Roar 2021 application/pdf https://hdl.handle.net/11250/3133115 https://www.airo-spea.com/copy-of-archive eng eng Portuguese Society for the Study of Birds (C.E.M.P.A.) Solheim, R. (2021). Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. AIRO, 29 (1), 460-466. urn:issn:0871-6595 https://hdl.handle.net/11250/3133115 https://www.airo-spea.com/copy-of-archive cristin:1924845 © 2021 The Author(s) 460-466 29 AIRO 1 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed Journal article 2021 ftagderuniv 2024-06-11T14:22:41Z When Snowy Owls (Bubo scandiacus) turned up in Finnmark, northern Norway in summer 1993, a vole lure on a line was used to test if the owls would detect, approach and attack the lure in the same way that Great Grey Owls (Strix nebulosa) do (Nero 1980). When a Snowy Owl was spotted more than 100 m away the lure was placed on the ground some 5-10 m away from me. When the owl looked towards me, the line was pulled to make the lure move. The reaction of the owl was observed through a telescope, and noted as positive if the owl stretched and bobbed its head or negative if no obvious reaction could be seen. I was sitting on the ground (n=4) or in a car (n=7) when pulling the lure. A total of 11 tests were carried out between 11-15 July, on nine different individuals (six males, two females, one owl not sexed). All males reacted to the lures from distances up to at least 1 km. The two females did not show any detectable reaction to the lures. Two males approached from at least 500 m and more than 100 m distance and attacked the lure, while another approached from at least 350 m distance to ca 100 m away. A male which sat just over 1 km away detected the lure but did not attack. Movement distances (n=29) were noted for eight undisturbed owls hunting natural prey. These owls most often flew 50-200 m between vantage points (mean 158 m, median 100 m). Short flights of 10-40 m were linked to predation attempts, presumably on lemmings or voles. publishedVersion Article in Journal/Newspaper Bubo scandiacus Finnmark Northern Norway snowy owl Strix nebulosa Finnmark Unvieristy of Agder: AURA Norway Nero ENVELOPE(159.833,159.833,-71.200,-71.200) |
institution |
Open Polar |
collection |
Unvieristy of Agder: AURA |
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ftagderuniv |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Solheim, Roar Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
When Snowy Owls (Bubo scandiacus) turned up in Finnmark, northern Norway in summer 1993, a vole lure on a line was used to test if the owls would detect, approach and attack the lure in the same way that Great Grey Owls (Strix nebulosa) do (Nero 1980). When a Snowy Owl was spotted more than 100 m away the lure was placed on the ground some 5-10 m away from me. When the owl looked towards me, the line was pulled to make the lure move. The reaction of the owl was observed through a telescope, and noted as positive if the owl stretched and bobbed its head or negative if no obvious reaction could be seen. I was sitting on the ground (n=4) or in a car (n=7) when pulling the lure. A total of 11 tests were carried out between 11-15 July, on nine different individuals (six males, two females, one owl not sexed). All males reacted to the lures from distances up to at least 1 km. The two females did not show any detectable reaction to the lures. Two males approached from at least 500 m and more than 100 m distance and attacked the lure, while another approached from at least 350 m distance to ca 100 m away. A male which sat just over 1 km away detected the lure but did not attack. Movement distances (n=29) were noted for eight undisturbed owls hunting natural prey. These owls most often flew 50-200 m between vantage points (mean 158 m, median 100 m). Short flights of 10-40 m were linked to predation attempts, presumably on lemmings or voles. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Solheim, Roar |
author_facet |
Solheim, Roar |
author_sort |
Solheim, Roar |
title |
Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
title_short |
Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
title_full |
Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
title_fullStr |
Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
title_full_unstemmed |
Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. |
title_sort |
snowy owl hunting behaviour and prey spotting distances revealed by vole lures. |
publisher |
Portuguese Society for the Study of Birds (C.E.M.P.A.) |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/3133115 https://www.airo-spea.com/copy-of-archive |
long_lat |
ENVELOPE(159.833,159.833,-71.200,-71.200) |
geographic |
Norway Nero |
geographic_facet |
Norway Nero |
genre |
Bubo scandiacus Finnmark Northern Norway snowy owl Strix nebulosa Finnmark |
genre_facet |
Bubo scandiacus Finnmark Northern Norway snowy owl Strix nebulosa Finnmark |
op_source |
460-466 29 AIRO 1 |
op_relation |
Solheim, R. (2021). Snowy Owl hunting behaviour and prey spotting distances revealed by vole lures. AIRO, 29 (1), 460-466. urn:issn:0871-6595 https://hdl.handle.net/11250/3133115 https://www.airo-spea.com/copy-of-archive cristin:1924845 |
op_rights |
© 2021 The Author(s) |
_version_ |
1802643006371659776 |