Individual variation in migratory path and behavior among Eastern Lark Sparrows

Two general migration strategies prevail among temperate-breeding migratory songbirds of North America. Most “Eastern” birds migrate relatively directly from breeding to wintering grounds immediately after molting, whereas a substantial proportion of “Western” species depart breeding grounds early,...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ross Jeremy D., Bridge Eli S., Rozmarynowycz Mark J., Bingman Verner P.
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2015
Materias:	geolocators site fidelity molt neotropical migrant chondestes grammacus Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/eecaee7a9e16412eb4f03d0913d33323
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:eecaee7a9e16412eb4f03d0913d33323
record_format	dspace
spelling	oai:doaj.org-article:eecaee7a9e16412eb4f03d0913d333232021-12-02T19:05:15ZIndividual variation in migratory path and behavior among Eastern Lark Sparrows2084-883810.2478/ami-2014-0003https://doaj.org/article/eecaee7a9e16412eb4f03d0913d333232015-01-01T00:00:00Zhttps://doi.org/10.2478/ami-2014-0003https://doaj.org/toc/2084-8838Two general migration strategies prevail among temperate-breeding migratory songbirds of North America. Most “Eastern” birds migrate relatively directly from breeding to wintering grounds immediately after molting, whereas a substantial proportion of “Western” species depart breeding grounds early, and molt during extended migratory stopovers before reaching wintering areas. The Lark Sparrow is one of a few Western Neotropical migrants with a breeding range that extends into regions dominated by Eastern species. We sought to determine whether Eastern Lark Sparrows migrated in a manner consistent with Western conspecifics or follow typical Eastern songbird migratory patterns. To do so, we tracked individual Eastern Lark Sparrows equipped with geolocators between their breeding grounds in Ohio and their unknown wintering locations. Data from three Ohio Lark Sparrows revealed 1) individual variation in the duration and directness of autumn migrations, 2) autumn departures that consistently preceded molt, 3) wintering grounds in the central highlands of Mexico, and 4) brief and direct spring migrations. These observations suggest that eastern populations of prevailingly Western migrants, such as Lark Sparrows, may be behaviorally constrained to depart breeding grounds before molt, but may facultatively adjust migration en route.Ross Jeremy D.Bridge Eli S.Rozmarynowycz Mark J.Bingman Verner P.De Gruyterarticlegeolocatorssite fidelitymoltneotropical migrantchondestes grammacusBiology (General)QH301-705.5ENAnimal Migration, Vol 2, Iss 1, Pp 29-33 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	geolocators site fidelity molt neotropical migrant chondestes grammacus Biology (General) QH301-705.5
spellingShingle	geolocators site fidelity molt neotropical migrant chondestes grammacus Biology (General) QH301-705.5 Ross Jeremy D. Bridge Eli S. Rozmarynowycz Mark J. Bingman Verner P. Individual variation in migratory path and behavior among Eastern Lark Sparrows
description	Two general migration strategies prevail among temperate-breeding migratory songbirds of North America. Most “Eastern” birds migrate relatively directly from breeding to wintering grounds immediately after molting, whereas a substantial proportion of “Western” species depart breeding grounds early, and molt during extended migratory stopovers before reaching wintering areas. The Lark Sparrow is one of a few Western Neotropical migrants with a breeding range that extends into regions dominated by Eastern species. We sought to determine whether Eastern Lark Sparrows migrated in a manner consistent with Western conspecifics or follow typical Eastern songbird migratory patterns. To do so, we tracked individual Eastern Lark Sparrows equipped with geolocators between their breeding grounds in Ohio and their unknown wintering locations. Data from three Ohio Lark Sparrows revealed 1) individual variation in the duration and directness of autumn migrations, 2) autumn departures that consistently preceded molt, 3) wintering grounds in the central highlands of Mexico, and 4) brief and direct spring migrations. These observations suggest that eastern populations of prevailingly Western migrants, such as Lark Sparrows, may be behaviorally constrained to depart breeding grounds before molt, but may facultatively adjust migration en route.
format	article
author	Ross Jeremy D. Bridge Eli S. Rozmarynowycz Mark J. Bingman Verner P.
author_facet	Ross Jeremy D. Bridge Eli S. Rozmarynowycz Mark J. Bingman Verner P.
author_sort	Ross Jeremy D.
title	Individual variation in migratory path and behavior among Eastern Lark Sparrows
title_short	Individual variation in migratory path and behavior among Eastern Lark Sparrows
title_full	Individual variation in migratory path and behavior among Eastern Lark Sparrows
title_fullStr	Individual variation in migratory path and behavior among Eastern Lark Sparrows
title_full_unstemmed	Individual variation in migratory path and behavior among Eastern Lark Sparrows
title_sort	individual variation in migratory path and behavior among eastern lark sparrows
publisher	De Gruyter
publishDate	2015
url	https://doaj.org/article/eecaee7a9e16412eb4f03d0913d33323
work_keys_str_mv	AT rossjeremyd individualvariationinmigratorypathandbehavioramongeasternlarksparrows AT bridgeelis individualvariationinmigratorypathandbehavioramongeasternlarksparrows AT rozmarynowyczmarkj individualvariationinmigratorypathandbehavioramongeasternlarksparrows AT bingmanvernerp individualvariationinmigratorypathandbehavioramongeasternlarksparrows
_version_	1718377183709233152

Individual variation in migratory path and behavior among Eastern Lark Sparrows

Ejemplares similares