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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Zoological Society of London
1983
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Online Access: | http://nora.nerc.ac.uk/id/eprint/524145/ https://doi.org/10.1111/j.1469-7998.1983.tb02813.x |
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ftnerc:oai:nora.nerc.ac.uk:524145 2023-05-15T15:44:42+02:00 The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia Hunter, S. 1983 http://nora.nerc.ac.uk/id/eprint/524145/ https://doi.org/10.1111/j.1469-7998.1983.tb02813.x unknown Zoological Society of London Hunter, S. 1983 The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia. Journal of Zoology, 200 (4). 521-538. https://doi.org/10.1111/j.1469-7998.1983.tb02813.x <https://doi.org/10.1111/j.1469-7998.1983.tb02813.x> Publication - Article PeerReviewed 1983 ftnerc https://doi.org/10.1111/j.1469-7998.1983.tb02813.x 2023-02-04T19:48:43Z 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 Natural Environment Research Council: NERC Open Research Archive Southern Ocean Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Giganteus ENVELOPE(62.500,62.500,-67.567,-67.567) Journal of Zoology 200 4 521 538 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
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 |
Zoological Society of London |
publishDate |
1983 |
url |
http://nora.nerc.ac.uk/id/eprint/524145/ https://doi.org/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 |
Southern Ocean Bird Island Giganteus |
geographic_facet |
Southern Ocean Bird Island Giganteus |
genre |
Bird Island Eudyptes chrysolophus Giant Petrels Southern Ocean |
genre_facet |
Bird Island Eudyptes chrysolophus Giant Petrels Southern Ocean |
op_relation |
Hunter, S. 1983 The food and feeding ecology of the giant petrels Macronectes halli and M. giganteus at South Georgia. Journal of Zoology, 200 (4). 521-538. https://doi.org/10.1111/j.1469-7998.1983.tb02813.x <https://doi.org/10.1111/j.1469-7998.1983.tb02813.x> |
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_ |
1766379074101444608 |