Flight speeds of two seabirds: a test of Norberg's hypothesis
Norberg suggested that birds should increase their flight speed when rearing chicks in order to maximize chick energy intake by reducing commuting time. We measured the incubation and chick‐rearing flight speeds of a medium‐range (Brünnich's Guillemot Uria lomvia ) and long‐range (Northern Fulm...
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crwiley:10.1111/j.1474-919x.2005.00462.x 2024-06-02T08:04:37+00:00 Flight speeds of two seabirds: a test of Norberg's hypothesis ELLIOTT, KYLE HAMISH GASTON, ANTHONY J. 2005 http://dx.doi.org/10.1111/j.1474-919x.2005.00462.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1474-919x.2005.00462.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1474-919x.2005.00462.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 147, issue 4, page 783-789 ISSN 0019-1019 1474-919X journal-article 2005 crwiley https://doi.org/10.1111/j.1474-919x.2005.00462.x 2024-05-03T10:53:33Z Norberg suggested that birds should increase their flight speed when rearing chicks in order to maximize chick energy intake by reducing commuting time. We measured the incubation and chick‐rearing flight speeds of a medium‐range (Brünnich's Guillemot Uria lomvia ) and long‐range (Northern Fulmar Fulmarus glacialis ) forager near the Prince Leopold Island colony, Nunavut, Canada. The mean flight speed for the long‐range forager was significantly higher during chick‐rearing than during incubation. The medium‐range forager showed no difference in mean flight speed during the two periods. We suggest that because petrels fly close to their minimum power velocity and have a low wing‐loading, whereas alcids fly close to their maximum range velocity and have a high wing‐loading, petrels have a greater ability than alcids to alter their flight speed according to changes in the demands of different breeding stages. Consequently, whereas Northern Fulmars adapt to the additional cost of chick‐rearing partially by altering flight speed, Brünnich's Guillemots can only do so by reducing mass. Article in Journal/Newspaper brünnich's guillemot Fulmarus glacialis Northern Fulmar Nunavut Uria lomvia uria Wiley Online Library Canada Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Leopold Island ENVELOPE(-63.380,-63.380,64.967,64.967) Nunavut Prince Leopold Island ENVELOPE(-90.083,-90.083,74.035,74.035) Ibis 147 4 783 789 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Norberg suggested that birds should increase their flight speed when rearing chicks in order to maximize chick energy intake by reducing commuting time. We measured the incubation and chick‐rearing flight speeds of a medium‐range (Brünnich's Guillemot Uria lomvia ) and long‐range (Northern Fulmar Fulmarus glacialis ) forager near the Prince Leopold Island colony, Nunavut, Canada. The mean flight speed for the long‐range forager was significantly higher during chick‐rearing than during incubation. The medium‐range forager showed no difference in mean flight speed during the two periods. We suggest that because petrels fly close to their minimum power velocity and have a low wing‐loading, whereas alcids fly close to their maximum range velocity and have a high wing‐loading, petrels have a greater ability than alcids to alter their flight speed according to changes in the demands of different breeding stages. Consequently, whereas Northern Fulmars adapt to the additional cost of chick‐rearing partially by altering flight speed, Brünnich's Guillemots can only do so by reducing mass. |
format |
Article in Journal/Newspaper |
author |
ELLIOTT, KYLE HAMISH GASTON, ANTHONY J. |
spellingShingle |
ELLIOTT, KYLE HAMISH GASTON, ANTHONY J. Flight speeds of two seabirds: a test of Norberg's hypothesis |
author_facet |
ELLIOTT, KYLE HAMISH GASTON, ANTHONY J. |
author_sort |
ELLIOTT, KYLE HAMISH |
title |
Flight speeds of two seabirds: a test of Norberg's hypothesis |
title_short |
Flight speeds of two seabirds: a test of Norberg's hypothesis |
title_full |
Flight speeds of two seabirds: a test of Norberg's hypothesis |
title_fullStr |
Flight speeds of two seabirds: a test of Norberg's hypothesis |
title_full_unstemmed |
Flight speeds of two seabirds: a test of Norberg's hypothesis |
title_sort |
flight speeds of two seabirds: a test of norberg's hypothesis |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.1474-919x.2005.00462.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1474-919x.2005.00462.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1474-919x.2005.00462.x |
long_lat |
ENVELOPE(-46.016,-46.016,-60.616,-60.616) ENVELOPE(-63.380,-63.380,64.967,64.967) ENVELOPE(-90.083,-90.083,74.035,74.035) |
geographic |
Canada Fulmar Leopold Island Nunavut Prince Leopold Island |
geographic_facet |
Canada Fulmar Leopold Island Nunavut Prince Leopold Island |
genre |
brünnich's guillemot Fulmarus glacialis Northern Fulmar Nunavut Uria lomvia uria |
genre_facet |
brünnich's guillemot Fulmarus glacialis Northern Fulmar Nunavut Uria lomvia uria |
op_source |
Ibis volume 147, issue 4, page 783-789 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1474-919x.2005.00462.x |
container_title |
Ibis |
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147 |
container_issue |
4 |
container_start_page |
783 |
op_container_end_page |
789 |
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1800749261563887616 |