A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers?
Making a detour can be advantageous to a migrating bird if fuel-deposition rates at stopover sites along the detour are considerably higher than at stopover sites along a more direct route. One example of an extensive migratory detour is that of the Sharp-tailed Sandpiper (Calidris acuminata), of wh...
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American Ornithological Society
2011
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Online Access: | https://doi.org/10.1525/cond.2011.090171 |
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ftbioone:10.1525/cond.2011.090171 2024-05-12T08:12:26+00:00 A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen world 2011-02-01 text/HTML https://doi.org/10.1525/cond.2011.090171 en eng American Ornithological Society doi:10.1525/cond.2011.090171 All rights reserved. https://doi.org/10.1525/cond.2011.090171 Text 2011 ftbioone https://doi.org/10.1525/cond.2011.090171 2024-04-16T02:08:44Z Making a detour can be advantageous to a migrating bird if fuel-deposition rates at stopover sites along the detour are considerably higher than at stopover sites along a more direct route. One example of an extensive migratory detour is that of the Sharp-tailed Sandpiper (Calidris acuminata), of which large numbers of juveniles are found during fall migration in western Alaska. These birds take a detour of 1500–3400 km from the most direct route between their natal range in northeastern Siberia and nonbreeding areas in Australia. We studied the autumnal fueling rates and fuel loads of 357 Sharp-tailed Sandpipers captured in western Alaska. In early September the birds increased in mass at a rate of only 0.5% of lean body mass day-1. Later in September, the rate of mass increase was about 6% of lean body mass day-1, among the highest values found among similar-sized shorebirds around the world. Some individuals more than doubled their body mass because of fuel deposition, allowing nonstop flight of between 7100 and 9800 km, presumably including a trans-oceanic flight to the southern hemisphere. Our observations indicated that predator attacks were rare in our study area, adding another potential benefit of the detour. We conclude that the most likely reason for the Alaskan detour is that it allows juvenile Sharp-tailed Sandpipers to put on large fuel stores at exceptionally high rates. Text Alaska Siberia BioOne Online Journals Detour ENVELOPE(-63.913,-63.913,-65.021,-65.021) The Detour ENVELOPE(-134.704,-134.704,62.733,62.733) The Condor 113 1 129 139 |
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Open Polar |
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BioOne Online Journals |
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ftbioone |
language |
English |
description |
Making a detour can be advantageous to a migrating bird if fuel-deposition rates at stopover sites along the detour are considerably higher than at stopover sites along a more direct route. One example of an extensive migratory detour is that of the Sharp-tailed Sandpiper (Calidris acuminata), of which large numbers of juveniles are found during fall migration in western Alaska. These birds take a detour of 1500–3400 km from the most direct route between their natal range in northeastern Siberia and nonbreeding areas in Australia. We studied the autumnal fueling rates and fuel loads of 357 Sharp-tailed Sandpipers captured in western Alaska. In early September the birds increased in mass at a rate of only 0.5% of lean body mass day-1. Later in September, the rate of mass increase was about 6% of lean body mass day-1, among the highest values found among similar-sized shorebirds around the world. Some individuals more than doubled their body mass because of fuel deposition, allowing nonstop flight of between 7100 and 9800 km, presumably including a trans-oceanic flight to the southern hemisphere. Our observations indicated that predator attacks were rare in our study area, adding another potential benefit of the detour. We conclude that the most likely reason for the Alaskan detour is that it allows juvenile Sharp-tailed Sandpipers to put on large fuel stores at exceptionally high rates. |
author2 |
Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen |
format |
Text |
author |
Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen |
spellingShingle |
Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
author_facet |
Åke Lindström Robert E. Gill Sarah E. Jamieson Brian McCaffery Liv Wennerberg Martin Wikelski Marcel Klaassen |
author_sort |
Åke Lindström |
title |
A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
title_short |
A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
title_full |
A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
title_fullStr |
A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
title_full_unstemmed |
A Puzzling Migratory Detour: Are Fueling Conditions in Alaska Driving the Movement of Juvenile Sharp-Tailed Sandpipers? |
title_sort |
puzzling migratory detour: are fueling conditions in alaska driving the movement of juvenile sharp-tailed sandpipers? |
publisher |
American Ornithological Society |
publishDate |
2011 |
url |
https://doi.org/10.1525/cond.2011.090171 |
op_coverage |
world |
long_lat |
ENVELOPE(-63.913,-63.913,-65.021,-65.021) ENVELOPE(-134.704,-134.704,62.733,62.733) |
geographic |
Detour The Detour |
geographic_facet |
Detour The Detour |
genre |
Alaska Siberia |
genre_facet |
Alaska Siberia |
op_source |
https://doi.org/10.1525/cond.2011.090171 |
op_relation |
doi:10.1525/cond.2011.090171 |
op_rights |
All rights reserved. |
op_doi |
https://doi.org/10.1525/cond.2011.090171 |
container_title |
The Condor |
container_volume |
113 |
container_issue |
1 |
container_start_page |
129 |
op_container_end_page |
139 |
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1798834785789935616 |