The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia
Giant petrels are the chief scavenging seabirds in the Southern Ocean. Quantitatively analysed regurgitations from chicks of both Macronectes halli and M. giganteus at Bird Island, South Georgia throughout the chick rearing period consisted predominantly of adult Macaroni penguins Eudyptes chrysolop...
Published in: | Journal of Zoology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley
1983
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Online Access: | http://dx.doi.org/10.1111/j.1469-7998.1983.tb02813.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1983.tb02813.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x |
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crwiley:10.1111/j.1469-7998.1983.tb02813.x 2024-10-13T14:06:25+00:00 The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia Hunter, S. 1983 http://dx.doi.org/10.1111/j.1469-7998.1983.tb02813.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1983.tb02813.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Zoology volume 200, issue 4, page 521-538 ISSN 0952-8369 1469-7998 journal-article 1983 crwiley https://doi.org/10.1111/j.1469-7998.1983.tb02813.x 2024-09-17T04:51:32Z Giant petrels are the chief scavenging seabirds in the Southern Ocean. Quantitatively analysed regurgitations from chicks of both Macronectes halli and M. giganteus at Bird Island, South Georgia throughout the chick rearing period consisted predominantly of adult Macaroni penguins Eudyptes chrysolophus. Significant quantities of burrowing petrels and krill were taken but the amount varied in different years. Only male M. halli fed regularly at fur seal carcases. Although 10 species were found in regurgitations, squid were unimportant in the diet. Fish are possibly more important during the winter. Intersexual differences in diet were of greater significance than interspecific ones with males taking more carrion and females more crustaceans. Chicks were fed during both day and night and in both species males received significantly more food than females during the fledging period. M. giganteus chicks received more than M. halli at all ages. Despite their extensive reliance on carrion both species take a variety of prey and this may be especially important during the winter when penguin and seal carrion is scarce. Article in Journal/Newspaper Bird Island Eudyptes chrysolophus Giant Petrels Southern Ocean Wiley Online Library Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Giganteus ENVELOPE(62.500,62.500,-67.567,-67.567) Southern Ocean Journal of Zoology 200 4 521 538 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Giant petrels are the chief scavenging seabirds in the Southern Ocean. Quantitatively analysed regurgitations from chicks of both Macronectes halli and M. giganteus at Bird Island, South Georgia throughout the chick rearing period consisted predominantly of adult Macaroni penguins Eudyptes chrysolophus. Significant quantities of burrowing petrels and krill were taken but the amount varied in different years. Only male M. halli fed regularly at fur seal carcases. Although 10 species were found in regurgitations, squid were unimportant in the diet. Fish are possibly more important during the winter. Intersexual differences in diet were of greater significance than interspecific ones with males taking more carrion and females more crustaceans. Chicks were fed during both day and night and in both species males received significantly more food than females during the fledging period. M. giganteus chicks received more than M. halli at all ages. Despite their extensive reliance on carrion both species take a variety of prey and this may be especially important during the winter when penguin and seal carrion is scarce. |
format |
Article in Journal/Newspaper |
author |
Hunter, S. |
spellingShingle |
Hunter, S. The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
author_facet |
Hunter, S. |
author_sort |
Hunter, S. |
title |
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
title_short |
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
title_full |
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
title_fullStr |
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
title_full_unstemmed |
The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia |
title_sort |
food and feeding ecology of the giant petrels macronectes halli and m. giganteus at south georgia |
publisher |
Wiley |
publishDate |
1983 |
url |
http://dx.doi.org/10.1111/j.1469-7998.1983.tb02813.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1469-7998.1983.tb02813.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x https://zslpublications.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-7998.1983.tb02813.x |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(62.500,62.500,-67.567,-67.567) |
geographic |
Bird Island Giganteus Southern Ocean |
geographic_facet |
Bird Island Giganteus Southern Ocean |
genre |
Bird Island Eudyptes chrysolophus Giant Petrels Southern Ocean |
genre_facet |
Bird Island Eudyptes chrysolophus Giant Petrels Southern Ocean |
op_source |
Journal of Zoology volume 200, issue 4, page 521-538 ISSN 0952-8369 1469-7998 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1469-7998.1983.tb02813.x |
container_title |
Journal of Zoology |
container_volume |
200 |
container_issue |
4 |
container_start_page |
521 |
op_container_end_page |
538 |
_version_ |
1812812563082117120 |