Patterns of partial avian migration in northern and southern temperate latitudes of the New World
We describe partial migration of passerine birds across temperate latitudes in the New World. Owing to lower climatic seasonality near the coast of North America, the proportion of partial migrants at high latitudes in North America should be lower when excluding coastal records. We detected a 10% d...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01584197_v112_n1_p17_Jahn |
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todo:paper_01584197_v112_n1_p17_Jahn2023-10-03T15:01:10Z Patterns of partial avian migration in northern and southern temperate latitudes of the New World Jahn, A.E. Bravo, S.P. Cueto, V.R. Levey, D.J. Morales, M.V. austral migration continentality overwinter seasonality Tyrannidae avifauna latitude migration overwintering passerine seasonality taxonomy temperate environment North America South America Aves Passeriformes Tyrannidae We describe partial migration of passerine birds across temperate latitudes in the New World. Owing to lower climatic seasonality near the coast of North America, the proportion of partial migrants at high latitudes in North America should be lower when excluding coastal records. We detected a 10% decrease in the proportion of partially migratory species at high latitudes when excluding species recorded only coastally at those latitudes. We also expected a smaller proportion of partial migrants in inland North America compared with South America. However, at high latitudes (i.e. >39°) we found a similar proportion of partially migratory species but a different taxonomic makeup between continents. Within the Tyrannidae (New World flycatchers), we evaluated the latitude at which species winter in North and South America. The mean latitude at which partially migratory New World flycatchers winter in temperate South America (30.3°S, s.d. 5.6) is not significantly different from the mean latitude in inland North America (30.4°N, s.d. 2.8). Partial migration of birds in the New World may be under different constraints, depending on factors such as habitat occupancy and distance of a population from the coast. © 2012 Royal Australasian Ornithologists Union. Fil:Bravo, S.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Cueto, V.R. 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_01584197_v112_n1_p17_Jahn |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
austral migration continentality overwinter seasonality Tyrannidae avifauna latitude migration overwintering passerine seasonality taxonomy temperate environment North America South America Aves Passeriformes Tyrannidae |
| spellingShingle |
austral migration continentality overwinter seasonality Tyrannidae avifauna latitude migration overwintering passerine seasonality taxonomy temperate environment North America South America Aves Passeriformes Tyrannidae Jahn, A.E. Bravo, S.P. Cueto, V.R. Levey, D.J. Morales, M.V. Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| topic_facet |
austral migration continentality overwinter seasonality Tyrannidae avifauna latitude migration overwintering passerine seasonality taxonomy temperate environment North America South America Aves Passeriformes Tyrannidae |
| description |
We describe partial migration of passerine birds across temperate latitudes in the New World. Owing to lower climatic seasonality near the coast of North America, the proportion of partial migrants at high latitudes in North America should be lower when excluding coastal records. We detected a 10% decrease in the proportion of partially migratory species at high latitudes when excluding species recorded only coastally at those latitudes. We also expected a smaller proportion of partial migrants in inland North America compared with South America. However, at high latitudes (i.e. >39°) we found a similar proportion of partially migratory species but a different taxonomic makeup between continents. Within the Tyrannidae (New World flycatchers), we evaluated the latitude at which species winter in North and South America. The mean latitude at which partially migratory New World flycatchers winter in temperate South America (30.3°S, s.d. 5.6) is not significantly different from the mean latitude in inland North America (30.4°N, s.d. 2.8). Partial migration of birds in the New World may be under different constraints, depending on factors such as habitat occupancy and distance of a population from the coast. © 2012 Royal Australasian Ornithologists Union. |
| format |
JOUR |
| author |
Jahn, A.E. Bravo, S.P. Cueto, V.R. Levey, D.J. Morales, M.V. |
| author_facet |
Jahn, A.E. Bravo, S.P. Cueto, V.R. Levey, D.J. Morales, M.V. |
| author_sort |
Jahn, A.E. |
| title |
Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| title_short |
Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| title_full |
Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| title_fullStr |
Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| title_full_unstemmed |
Patterns of partial avian migration in northern and southern temperate latitudes of the New World |
| title_sort |
patterns of partial avian migration in northern and southern temperate latitudes of the new world |
| url |
http://hdl.handle.net/20.500.12110/paper_01584197_v112_n1_p17_Jahn |
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