Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario
Moult intensity and chronology in staging Eastern-Population (EP) Tundra Swans (Cygnus columbianus columbianus) were studied during spring in 1999 and 2000 (n = 35) and during fall in 1999, 2000, and 2001 (n = 47) at Long Point, Lake Erie, Ontario. To test for age, sex, and seasonal differences in m...
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crcansciencepubl:10.1139/z03-089 2023-12-17T10:29:19+01:00 Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario Craigie, G Eoin Petrie, Scott A 2003 http://dx.doi.org/10.1139/z03-089 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-089 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 81, issue 6, page 1057-1062 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2003 crcansciencepubl https://doi.org/10.1139/z03-089 2023-11-19T13:38:59Z Moult intensity and chronology in staging Eastern-Population (EP) Tundra Swans (Cygnus columbianus columbianus) were studied during spring in 1999 and 2000 (n = 35) and during fall in 1999, 2000, and 2001 (n = 47) at Long Point, Lake Erie, Ontario. To test for age, sex, and seasonal differences in moult intensity, 20 feather regions were scored according to the proportion of growing feathers. Adult, subadult, and juvenile Tundra Swans moulted contour feathers at low intensities during spring and fall. Males and females of all three age classes had similar patterns and intensities of moult during spring and fall. Shared costs of incubation and brood rearing, perennial monogamy, and lack of a breeding plumage could be some of the pressures selecting for intersexual similarities in feather replacement during migration. Adult, subadult, and juvenile Tundra Swans moulted more intensively during fall than spring. Larger lipid reserves and seasonal dietary differences may allow fall-staging Tundra Swans to moult more intensively than spring-staging birds at Long Point. Overlap of nutritionally costly events (moult and migration) may be necessary as Tundra Swans spend half of their annual cycle on spring and fall staging areas. However, reduced daily nutritional costs associated with moulting at low intensities and migrating slowly apparently permits the overlap of these two life-cycle events. Article in Journal/Newspaper Cygnus columbianus Tundra Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 81 6 1057 1062 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Craigie, G Eoin Petrie, Scott A Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Moult intensity and chronology in staging Eastern-Population (EP) Tundra Swans (Cygnus columbianus columbianus) were studied during spring in 1999 and 2000 (n = 35) and during fall in 1999, 2000, and 2001 (n = 47) at Long Point, Lake Erie, Ontario. To test for age, sex, and seasonal differences in moult intensity, 20 feather regions were scored according to the proportion of growing feathers. Adult, subadult, and juvenile Tundra Swans moulted contour feathers at low intensities during spring and fall. Males and females of all three age classes had similar patterns and intensities of moult during spring and fall. Shared costs of incubation and brood rearing, perennial monogamy, and lack of a breeding plumage could be some of the pressures selecting for intersexual similarities in feather replacement during migration. Adult, subadult, and juvenile Tundra Swans moulted more intensively during fall than spring. Larger lipid reserves and seasonal dietary differences may allow fall-staging Tundra Swans to moult more intensively than spring-staging birds at Long Point. Overlap of nutritionally costly events (moult and migration) may be necessary as Tundra Swans spend half of their annual cycle on spring and fall staging areas. However, reduced daily nutritional costs associated with moulting at low intensities and migrating slowly apparently permits the overlap of these two life-cycle events. |
format |
Article in Journal/Newspaper |
author |
Craigie, G Eoin Petrie, Scott A |
author_facet |
Craigie, G Eoin Petrie, Scott A |
author_sort |
Craigie, G Eoin |
title |
Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
title_short |
Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
title_full |
Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
title_fullStr |
Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
title_full_unstemmed |
Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario |
title_sort |
moult intensity and chronology of tundra swans during spring and fall migration at long point, lake erie, ontario |
publisher |
Canadian Science Publishing |
publishDate |
2003 |
url |
http://dx.doi.org/10.1139/z03-089 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-089 |
genre |
Cygnus columbianus Tundra |
genre_facet |
Cygnus columbianus Tundra |
op_source |
Canadian Journal of Zoology volume 81, issue 6, page 1057-1062 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z03-089 |
container_title |
Canadian Journal of Zoology |
container_volume |
81 |
container_issue |
6 |
container_start_page |
1057 |
op_container_end_page |
1062 |
_version_ |
1785581676134400000 |