Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls
Hooded Crows Corvus cornix, Great Black‐backed Gulls Larus marinus and Herring Gulls L. argentatus were the main nest predators in an Eider population in southwest Sweden. The clutch sizes of Eider nests within gull colonies did not differ from those outside gull colonies. The proportion of Eider ne...
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crwiley:10.1111/j.1474-919x.1988.tb00961.x 2024-03-24T09:05:13+00:00 Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls GÖTMARK, FRANK AHLUND, MATTI 1988 http://dx.doi.org/10.1111/j.1474-919x.1988.tb00961.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1474-919X.1988.tb00961.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1474-919X.1988.tb00961.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 130, issue 1, page 111-123 ISSN 0019-1019 1474-919X Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1988 crwiley https://doi.org/10.1111/j.1474-919x.1988.tb00961.x 2024-02-28T02:10:55Z Hooded Crows Corvus cornix, Great Black‐backed Gulls Larus marinus and Herring Gulls L. argentatus were the main nest predators in an Eider population in southwest Sweden. The clutch sizes of Eider nests within gull colonies did not differ from those outside gull colonies. The proportion of Eider nests destroyed by predators was significantly lower within than outside gull colonies, especially on islands with Lesser Black‐backed Gulls L. fuscus. Although the difference was not significant, the survival time of simulated Eider nests was higher within than outside gull colonies. On Eider islands with gull colonies, foraying crows spent more time within the colony area than expected by chance. However, crows apparently avoided an area around each gull nest, and we suggest that the colonies, to some extent, protected Eider nests against predation. The density of Eider nests was higher on gull islands than on gull‐ free islands, and higher within than outside the gull colonies. However, the association with gulls was weak compared to that displayed by some other waterfowl. Article in Journal/Newspaper Somateria mollissima Wiley Online Library Eider Islands ENVELOPE(-69.331,-69.331,60.867,60.867) Ibis 130 1 111 123 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics GÖTMARK, FRANK AHLUND, MATTI Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Hooded Crows Corvus cornix, Great Black‐backed Gulls Larus marinus and Herring Gulls L. argentatus were the main nest predators in an Eider population in southwest Sweden. The clutch sizes of Eider nests within gull colonies did not differ from those outside gull colonies. The proportion of Eider nests destroyed by predators was significantly lower within than outside gull colonies, especially on islands with Lesser Black‐backed Gulls L. fuscus. Although the difference was not significant, the survival time of simulated Eider nests was higher within than outside gull colonies. On Eider islands with gull colonies, foraying crows spent more time within the colony area than expected by chance. However, crows apparently avoided an area around each gull nest, and we suggest that the colonies, to some extent, protected Eider nests against predation. The density of Eider nests was higher on gull islands than on gull‐ free islands, and higher within than outside the gull colonies. However, the association with gulls was weak compared to that displayed by some other waterfowl. |
format |
Article in Journal/Newspaper |
author |
GÖTMARK, FRANK AHLUND, MATTI |
author_facet |
GÖTMARK, FRANK AHLUND, MATTI |
author_sort |
GÖTMARK, FRANK |
title |
Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
title_short |
Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
title_full |
Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
title_fullStr |
Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
title_full_unstemmed |
Nest predation and nest site selection among Eiders Somateria mollissima: the influence of gulls |
title_sort |
nest predation and nest site selection among eiders somateria mollissima: the influence of gulls |
publisher |
Wiley |
publishDate |
1988 |
url |
http://dx.doi.org/10.1111/j.1474-919x.1988.tb00961.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1474-919X.1988.tb00961.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1474-919X.1988.tb00961.x |
long_lat |
ENVELOPE(-69.331,-69.331,60.867,60.867) |
geographic |
Eider Islands |
geographic_facet |
Eider Islands |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
Ibis volume 130, issue 1, page 111-123 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1474-919x.1988.tb00961.x |
container_title |
Ibis |
container_volume |
130 |
container_issue |
1 |
container_start_page |
111 |
op_container_end_page |
123 |
_version_ |
1794406726189973504 |