Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia
Abstract We investigated foraging behavior of Wandering Albatrosses (Diomedea exulans) breeding at South Georgia to assess how sex and season-specific foraging patterns relate to provisioning performance. We estimated Wandering Albatross chicks require 60–65 kg of food over the chick-rearing period;...
Published in: | The Condor |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press (OUP)
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1093/condor/103.2.230 http://academic.oup.com/condor/article-pdf/103/2/230/29712293/condor0230.pdf |
id |
croxfordunivpr:10.1093/condor/103.2.230 |
---|---|
record_format |
openpolar |
spelling |
croxfordunivpr:10.1093/condor/103.2.230 2023-12-31T10:05:24+01:00 Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia Berrow, Simon D. Croxall, John P. 2001 http://dx.doi.org/10.1093/condor/103.2.230 http://academic.oup.com/condor/article-pdf/103/2/230/29712293/condor0230.pdf en eng Oxford University Press (OUP) The Condor volume 103, issue 2, page 230-239 ISSN 0010-5422 1938-5129 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2001 croxfordunivpr https://doi.org/10.1093/condor/103.2.230 2023-12-06T08:58:37Z Abstract We investigated foraging behavior of Wandering Albatrosses (Diomedea exulans) breeding at South Georgia to assess how sex and season-specific foraging patterns relate to provisioning performance. We estimated Wandering Albatross chicks require 60–65 kg of food over the chick-rearing period; males deliver 54% of this total. Meal size delivered by both sexes remained essentially constant throughout the post-brooding chick-rearing period, but foraging trip duration varied considerably. Females made consistently longer foraging trips and delivered smaller meals but transported an average load that was 20% heavier in proportion to their body mass than males. We suggest that chick-rearing places greater demands on females compared with males and Wandering Albatrosses work hard to deliver food during the first half of chick rearing (at the expense of their own condition), thereafter reduce their work rate, presumably so as not to compromise their survival. Article in Journal/Newspaper Bird Island Diomedea exulans Wandering Albatross Oxford University Press (via Crossref) The Condor 103 2 230 239 |
institution |
Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Berrow, Simon D. Croxall, John P. Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Abstract We investigated foraging behavior of Wandering Albatrosses (Diomedea exulans) breeding at South Georgia to assess how sex and season-specific foraging patterns relate to provisioning performance. We estimated Wandering Albatross chicks require 60–65 kg of food over the chick-rearing period; males deliver 54% of this total. Meal size delivered by both sexes remained essentially constant throughout the post-brooding chick-rearing period, but foraging trip duration varied considerably. Females made consistently longer foraging trips and delivered smaller meals but transported an average load that was 20% heavier in proportion to their body mass than males. We suggest that chick-rearing places greater demands on females compared with males and Wandering Albatrosses work hard to deliver food during the first half of chick rearing (at the expense of their own condition), thereafter reduce their work rate, presumably so as not to compromise their survival. |
format |
Article in Journal/Newspaper |
author |
Berrow, Simon D. Croxall, John P. |
author_facet |
Berrow, Simon D. Croxall, John P. |
author_sort |
Berrow, Simon D. |
title |
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
title_short |
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
title_full |
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
title_fullStr |
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
title_full_unstemmed |
Provisioning Rate and Attendance Patterns of Wandering Albatrosses at Bird Island, South Georgia |
title_sort |
provisioning rate and attendance patterns of wandering albatrosses at bird island, south georgia |
publisher |
Oxford University Press (OUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1093/condor/103.2.230 http://academic.oup.com/condor/article-pdf/103/2/230/29712293/condor0230.pdf |
genre |
Bird Island Diomedea exulans Wandering Albatross |
genre_facet |
Bird Island Diomedea exulans Wandering Albatross |
op_source |
The Condor volume 103, issue 2, page 230-239 ISSN 0010-5422 1938-5129 |
op_doi |
https://doi.org/10.1093/condor/103.2.230 |
container_title |
The Condor |
container_volume |
103 |
container_issue |
2 |
container_start_page |
230 |
op_container_end_page |
239 |
_version_ |
1786836997183111168 |