Long-distance bird migration within South America revealed by light-level geolocators
Little is known about the timing of migration, migration routes, and migratory connectivity of most of the >230 species of birds that breed at south temperate latitudes of South America and then migrate toward the tropics to overwinter. We used light-level geolocators to track the migration o...
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todo:paper_00048038_v130_n2_p223_Jahn2023-10-03T14:03:05Z Long-distance bird migration within South America revealed by light-level geolocators Jahn, A.E. Levey, D.J. Cueto, V.R. Ledezma, J.P. Tuero, D.T. Fox, J.W. Masson, D. Argentina Fork-tailed Flycatcher Geolocator Neotropical austral migrants Tyrannidae Tyrannus savana migration migration route passerine seasonal variation tracking winter Amazonia Argentina Brazil Colombia Venezuela Aves Passeri Passeriformes Tyrannidae Tyrannus savana Little is known about the timing of migration, migration routes, and migratory connectivity of most of the >230 species of birds that breed at south temperate latitudes of South America and then migrate toward the tropics to overwinter. We used light-level geolocators to track the migration of 3 male and 3 female Fork-tailed Flycatchers (Tyrannus savana) captured on their breeding territories in Argentina. All birds initiated fall migration between late January and late February, and migrated 45 to 66 km day-1 in a northwesterly direction through central South America to either one or two wintering areas. Five individuals first spent several weeks (in April and May) in western Amazonia (mainly Peru, northwestern Brazil, and southern Colombia) before moving east to spend the rest of the non-breeding season in central Venezuela and northern Brazil. One individual occupied primarily one wintering area in eastern Colombia, northwestern Brazil, and southwestern Venezuela. Fall migration took approximately 7-12 weeks to complete and covered a distance of 2,888-4,105 km. We did not analyze spring migration data because of broad overlap with the austral spring equinox. These results are the first data on wintering locations, migration timing, and routes of individual migrant passerine birds that breed in South America. Given the general lack of similar data for practically all migratory birds that breed in South America, geolocator technology has the potential to revolutionize our understanding of how birds migrate-and the threats they face-on South America's rapidly changing landscape. © 2013 by The American Ornithologists' Union. All rights reserved. Fil:Cueto, V.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Tuero, D.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00048038_v130_n2_p223_Jahn |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Argentina Fork-tailed Flycatcher Geolocator Neotropical austral migrants Tyrannidae Tyrannus savana migration migration route passerine seasonal variation tracking winter Amazonia Argentina Brazil Colombia Venezuela Aves Passeri Passeriformes Tyrannidae Tyrannus savana |
| spellingShingle |
Argentina Fork-tailed Flycatcher Geolocator Neotropical austral migrants Tyrannidae Tyrannus savana migration migration route passerine seasonal variation tracking winter Amazonia Argentina Brazil Colombia Venezuela Aves Passeri Passeriformes Tyrannidae Tyrannus savana Jahn, A.E. Levey, D.J. Cueto, V.R. Ledezma, J.P. Tuero, D.T. Fox, J.W. Masson, D. Long-distance bird migration within South America revealed by light-level geolocators |
| topic_facet |
Argentina Fork-tailed Flycatcher Geolocator Neotropical austral migrants Tyrannidae Tyrannus savana migration migration route passerine seasonal variation tracking winter Amazonia Argentina Brazil Colombia Venezuela Aves Passeri Passeriformes Tyrannidae Tyrannus savana |
| description |
Little is known about the timing of migration, migration routes, and migratory connectivity of most of the >230 species of birds that breed at south temperate latitudes of South America and then migrate toward the tropics to overwinter. We used light-level geolocators to track the migration of 3 male and 3 female Fork-tailed Flycatchers (Tyrannus savana) captured on their breeding territories in Argentina. All birds initiated fall migration between late January and late February, and migrated 45 to 66 km day-1 in a northwesterly direction through central South America to either one or two wintering areas. Five individuals first spent several weeks (in April and May) in western Amazonia (mainly Peru, northwestern Brazil, and southern Colombia) before moving east to spend the rest of the non-breeding season in central Venezuela and northern Brazil. One individual occupied primarily one wintering area in eastern Colombia, northwestern Brazil, and southwestern Venezuela. Fall migration took approximately 7-12 weeks to complete and covered a distance of 2,888-4,105 km. We did not analyze spring migration data because of broad overlap with the austral spring equinox. These results are the first data on wintering locations, migration timing, and routes of individual migrant passerine birds that breed in South America. Given the general lack of similar data for practically all migratory birds that breed in South America, geolocator technology has the potential to revolutionize our understanding of how birds migrate-and the threats they face-on South America's rapidly changing landscape. © 2013 by The American Ornithologists' Union. All rights reserved. |
| format |
JOUR |
| author |
Jahn, A.E. Levey, D.J. Cueto, V.R. Ledezma, J.P. Tuero, D.T. Fox, J.W. Masson, D. |
| author_facet |
Jahn, A.E. Levey, D.J. Cueto, V.R. Ledezma, J.P. Tuero, D.T. Fox, J.W. Masson, D. |
| author_sort |
Jahn, A.E. |
| title |
Long-distance bird migration within South America revealed by light-level geolocators |
| title_short |
Long-distance bird migration within South America revealed by light-level geolocators |
| title_full |
Long-distance bird migration within South America revealed by light-level geolocators |
| title_fullStr |
Long-distance bird migration within South America revealed by light-level geolocators |
| title_full_unstemmed |
Long-distance bird migration within South America revealed by light-level geolocators |
| title_sort |
long-distance bird migration within south america revealed by light-level geolocators |
| url |
http://hdl.handle.net/20.500.12110/paper_00048038_v130_n2_p223_Jahn |
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