Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers
Cerulean Warblers (Setophaga cerulea) are among the fastest declining Nearctic-Neotropical migrant wood-warblers (Parulidae) in North America. Despite ongoing conservation efforts, little is known about their non-breeding distribution. In June 2016-2018, we deployed geolocators (n = 30) on adult mal...
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doaj-399f053097774d10a36a9d4af885fc632021-09-06T19:39:50ZengDe GruyterAnimal Migration2084-88382020-03-0171192610.1515/ami-2020-0003ami-2020-0003Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean WarblersDelancey Clayton D0Islam Kamal1Kramer Gunnar R2MacDonald Garrett J3Sharp Alexander R4Connare Brandon M5Ball State University,Muncie, IN United StatesBall State University,Muncie, IN United StatesUniversity of Toledo,Toledo, OH United StatesBall State University,Muncie, IN United StatesBall State University,Muncie, IN United StatesBall State University,Muncie, IN United StatesCerulean Warblers (Setophaga cerulea) are among the fastest declining Nearctic-Neotropical migrant wood-warblers (Parulidae) in North America. Despite ongoing conservation efforts, little is known about their non-breeding distribution. In June 2016-2018, we deployed geolocators (n = 30) on adult male Cerulean Warblers in Indiana, USA, to track annual movements of individuals. Recovered geolocators (n = 4) showed that Cerulean Warblers occurred broadly throughout northern South America. Autumn migration lasted 44-71 days (n = 4), whereas spring migration lasted 37-41 days (n = 3). The average migration distance was 5268 km. During autumn migration, Cerulean Warblers made 1-4 stopovers (i.e., ≥2 days; n = 4) and 1-2 stopovers during spring migration (n = 3). When crossing the Gulf of Mexico during autumn migration, two birds stopped over after crossing, but not beforehand. Two others navigated through the Caribbean rather than crossing the Gulf of Mexico. During spring migration, one individual stopped after crossing, one individual stopped before crossing, and one individual stopped before and after crossing the Gulf of Mexico. No birds migrated through the Caribbean Islands during spring migration. These results represent novel information describing annual movements of individual Cerulean Warblers and will inform conservation efforts for this declining species.https://doi.org/10.1515/ami-2020-0003full annual cyclemigratory connectivitysetophaga cerulea |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Delancey Clayton D Islam Kamal Kramer Gunnar R MacDonald Garrett J Sharp Alexander R Connare Brandon M |
spellingShingle |
Delancey Clayton D Islam Kamal Kramer Gunnar R MacDonald Garrett J Sharp Alexander R Connare Brandon M Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers Animal Migration full annual cycle migratory connectivity setophaga cerulea |
author_facet |
Delancey Clayton D Islam Kamal Kramer Gunnar R MacDonald Garrett J Sharp Alexander R Connare Brandon M |
author_sort |
Delancey Clayton D |
title |
Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers |
title_short |
Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers |
title_full |
Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers |
title_fullStr |
Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers |
title_full_unstemmed |
Geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of Cerulean Warblers |
title_sort |
geolocators reveal migration routes, stopover sites, and nonbreeding dispersion in a population of cerulean warblers |
publisher |
De Gruyter |
series |
Animal Migration |
issn |
2084-8838 |
publishDate |
2020-03-01 |
description |
Cerulean Warblers (Setophaga cerulea) are among the fastest declining Nearctic-Neotropical migrant wood-warblers (Parulidae) in North America. Despite ongoing conservation efforts, little is known about their non-breeding distribution. In June 2016-2018, we deployed geolocators (n = 30) on adult male Cerulean Warblers in Indiana, USA, to track annual movements of individuals. Recovered geolocators (n = 4) showed that Cerulean Warblers occurred broadly throughout northern South America. Autumn migration lasted 44-71 days (n = 4), whereas spring migration lasted 37-41 days (n = 3). The average migration distance was 5268 km. During autumn migration, Cerulean Warblers made 1-4 stopovers (i.e., ≥2 days; n = 4) and 1-2 stopovers during spring migration (n = 3). When crossing the Gulf of Mexico during autumn migration, two birds stopped over after crossing, but not beforehand. Two others navigated through the Caribbean rather than crossing the Gulf of Mexico. During spring migration, one individual stopped after crossing, one individual stopped before crossing, and one individual stopped before and after crossing the Gulf of Mexico. No birds migrated through the Caribbean Islands during spring migration. These results represent novel information describing annual movements of individual Cerulean Warblers and will inform conservation efforts for this declining species. |
topic |
full annual cycle migratory connectivity setophaga cerulea |
url |
https://doi.org/10.1515/ami-2020-0003 |
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