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Fall Gulf of Mexico crossings by migratory Swainson's thrushes, wood thrushes, and red-eyed vireos (data from Deppe et al 2015)
Fall Gulf of Mexico crossings by migratory Swainson's thrushes, wood thrushes, and red-eyed vireos (data from Deppe et al 2015)
Citation
Deppe JL, Ward MP, Bolus RT, Diehl RH, Celis-Murillo A, Zenzal TJJ, Moore FR, Smolinsky JA, Schofield LN, Enstrom DA, Paxton EH, Bohrer G, Beveroth TA, Raim A, Obringer RL, Delaney D, Cochran WW. 2016. Fall Gulf of Mexico crossings by migratory Swainson's thrushes, wood thrushes, and red-eyed vireos (data from Deppe et al 2015). Movebank Data Repository. https://doi.org/10.5441/001/1.12hv60k6/1Abstract
Approximately two thirds of migratory songbirds in eastern North America negotiate the Gulf of Mexico (GOM), where inclement weather coupled with no refueling or resting opportunities can be lethal. However, decisions made when navigating such features and their consequences remain largely unknown due to technological limitations of tracking small animals over large areas. We used automated radio telemetry to track three songbird species (Red-eyed Vireo, Swainson’s Thrush, Wood Thrush) from coastal Alabama to the northern Yucatan Peninsula (YP) during fall migration. Detecting songbirds after crossing ∼1,000 km of open water allowed us to examine intrinsic (age, wing length, fat) and extrinsic (weather, date) variables shaping departure decisions, arrival at the YP, and crossing times. Large fat reserves and low humidity, indicative of beneficial synoptic weather patterns, favored southward departure across the Gulf. Individuals detected in the YP departed with large fat reserves and later in the fall with profitable winds, and flight durations (mean = 22.4 h) were positively related to wind profit. Age was not related to departure behavior, arrival, or travel time. However, vireos negotiated the GOM differently than thrushes, including different departure decisions, lower probability of detection in the YP, and longer crossing times. Defense of winter territories by thrushes but not vireos and species-specific foraging habits may explain the divergent migratory behaviors. Fat reserves appear extremely important to departure decisions and arrival in the YP. As habitat along the GOM is degraded, birds may be limited in their ability to acquire fat to cross the Gulf.
Keywords
animal tracking, Catharus ustulatus, Env-DATA, fall migration, Gulf of Mexico, Hylocichla mustelina, migration barrier, Movebank, radio telemetry, red-eyed vireo, risk minimization, songbirds, Swainson's thrush, Vireo olivaceus, wood thrush, Yucatan Peninsula
DOIs of related Publications
BibTex
@misc{001/1_12hv60k6/1, title = {Fall Gulf of Mexico crossings by migratory Swainson's thrushes, wood thrushes, and red-eyed vireos (data from Deppe et al 2015)}, author = {Deppe, JL and Ward, MP and Bolus, RT and Diehl, RH and Celis-Murillo, A and Zenzal, TJJ and Moore, FR and Smolinsky, JA and Schofield, LN and Enstrom, DA and Paxton, EH and Bohrer, G and Beveroth, TA and Raim, A and Obringer, RL and Delaney, D and Cochran, WW}, year = {2016}, URL = {http://dx.doi.org/10.5441/001/1.12hv60k6/1}, doi = {doi:10.5441/001/1.12hv60k6/1}, publisher = {Movebank data repository} }
RIS
TY - DATA ID - doi:10.5441/001/1.12hv60k6/1 T1 - Fall Gulf of Mexico crossings by migratory Swainson's thrushes, wood thrushes, and red-eyed vireos (data from Deppe et al 2015) AU - Deppe, Jill L. AU - Ward, Michael P. AU - Bolus, Rachel T. AU - Diehl, Robert H. AU - Celis-Murillo, Antonio AU - Zenzal, Theodore J. Jr. AU - Moore, Frank R. AU - Smolinsky, Jaclyn A. AU - Schofield, Lynn N. AU - Enstrom, David A. AU - Paxton, Eben H. AU - Bohrer, Gil AU - Beveroth, Tara A. AU - Raim, Arlo AU - Obringer, Renee L. AU - Delaney, David AU - Cochran, William W. Y1 - 2016/09/08 KW - animal tracking KW - Catharus ustulatus KW - Env-DATA KW - fall migration KW - Gulf of Mexico KW - Hylocichla mustelina KW - migration barrier KW - Movebank KW - radio telemetry KW - red-eyed vireo KW - risk minimization KW - songbirds KW - Swainson's thrush KW - Vireo olivaceus KW - wood thrush KW - Yucatan Peninsula KW - Vireo olivaceus KW - Catharus ustulatus KW - Hylocichla mustelina PB - Movebank data repository UR - http://dx.doi.org/10.5441/001/1.12hv60k6/1 DO - doi:10.5441/001/1.12hv60k6/1 ER -