Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda
Occurrence of Long-tailed Skuas Stercorarius longicaudus at HardangerviddaIn the Western Palearctic, the southernmost regular breeding area of Long-tailed Skuas is found at Hardangervidda mountain plateau, south Norway. Up to now, available information has indicated that the species only occurs in s...
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ftboapojs:oai:boap.uib.no:article/197 2023-05-15T16:12:01+02:00 Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda Falkenberg, Frode Lislevand, Terje Solheim, Kjell Erik 2004-01-01 application/pdf https://boap.uib.no/index.php/ornis/article/view/197 https://doi.org/10.15845/on.v27i0.197 nor eng nor eng BirdLife Norway https://boap.uib.no/index.php/ornis/article/view/197/247 https://boap.uib.no/index.php/ornis/article/view/197/248 https://boap.uib.no/index.php/ornis/article/view/197 doi:10.15845/on.v27i0.197 Ornis Norvegica; Årg 27 (2004); 86-93 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2004 ftboapojs https://doi.org/10.15845/on.v27i0.197 2021-11-03T23:34:19Z Occurrence of Long-tailed Skuas Stercorarius longicaudus at HardangerviddaIn the Western Palearctic, the southernmost regular breeding area of Long-tailed Skuas is found at Hardangervidda mountain plateau, south Norway. Up to now, available information has indicated that the species only occurs in small numbers in this area (maximum four nests found in 1966). In 2001 and 2002 high abundances of small rodents were observed at Hardangervidda. We then found 12 and 9 nesting pairs of Long-tailed Skuas, respectively. In addition, one nest was found by other observers in both years, and several birds were observed in areas that we did not manage to cover, suggesting that at least 15 pairs may have bred in 2001. The whole area was not covered in 2002, but observations of clutch size and nest density indicated similar numbers of breeding pairs. Most breeding pairs were in both years concentrated within an area of about 20 km2. The density here was similar to what is reported from more central parts of the species range in Fennoscandia (mean neighbouring distance = 815 m, 0.83 pairs/km2; Fig. 2). No birds were observed at all in 2003, probably due to very low small rodent abundance, although the area was only visited once this summer. Compared with previous reports, our observations suggest that the Long-tailed Skua population has increased at Hardangervidda during the last few decades. Article in Journal/Newspaper Fennoscandia Fjelljo Long-tailed Skua Stercorarius longicaudus Bergen Open Access Publishing (University of Bergen Library) Norway Ornis Norvegica 27 0 86 |
institution |
Open Polar |
collection |
Bergen Open Access Publishing (University of Bergen Library) |
op_collection_id |
ftboapojs |
language |
Norwegian English |
description |
Occurrence of Long-tailed Skuas Stercorarius longicaudus at HardangerviddaIn the Western Palearctic, the southernmost regular breeding area of Long-tailed Skuas is found at Hardangervidda mountain plateau, south Norway. Up to now, available information has indicated that the species only occurs in small numbers in this area (maximum four nests found in 1966). In 2001 and 2002 high abundances of small rodents were observed at Hardangervidda. We then found 12 and 9 nesting pairs of Long-tailed Skuas, respectively. In addition, one nest was found by other observers in both years, and several birds were observed in areas that we did not manage to cover, suggesting that at least 15 pairs may have bred in 2001. The whole area was not covered in 2002, but observations of clutch size and nest density indicated similar numbers of breeding pairs. Most breeding pairs were in both years concentrated within an area of about 20 km2. The density here was similar to what is reported from more central parts of the species range in Fennoscandia (mean neighbouring distance = 815 m, 0.83 pairs/km2; Fig. 2). No birds were observed at all in 2003, probably due to very low small rodent abundance, although the area was only visited once this summer. Compared with previous reports, our observations suggest that the Long-tailed Skua population has increased at Hardangervidda during the last few decades. |
format |
Article in Journal/Newspaper |
author |
Falkenberg, Frode Lislevand, Terje Solheim, Kjell Erik |
spellingShingle |
Falkenberg, Frode Lislevand, Terje Solheim, Kjell Erik Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
author_facet |
Falkenberg, Frode Lislevand, Terje Solheim, Kjell Erik |
author_sort |
Falkenberg, Frode |
title |
Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
title_short |
Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
title_full |
Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
title_fullStr |
Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
title_full_unstemmed |
Forekomsten av fjelljo Stercorarius longicaudus på Hardangervidda |
title_sort |
forekomsten av fjelljo stercorarius longicaudus på hardangervidda |
publisher |
BirdLife Norway |
publishDate |
2004 |
url |
https://boap.uib.no/index.php/ornis/article/view/197 https://doi.org/10.15845/on.v27i0.197 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia Fjelljo Long-tailed Skua Stercorarius longicaudus |
genre_facet |
Fennoscandia Fjelljo Long-tailed Skua Stercorarius longicaudus |
op_source |
Ornis Norvegica; Årg 27 (2004); 86-93 |
op_relation |
https://boap.uib.no/index.php/ornis/article/view/197/247 https://boap.uib.no/index.php/ornis/article/view/197/248 https://boap.uib.no/index.php/ornis/article/view/197 doi:10.15845/on.v27i0.197 |
op_doi |
https://doi.org/10.15845/on.v27i0.197 |
container_title |
Ornis Norvegica |
container_volume |
27 |
container_issue |
0 |
container_start_page |
86 |
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1765997250599714816 |