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The first documentation of the Nearctic-Paleotropical migratory route of the Arctic Warbler
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  • Evan Adams,
  • Ian Stenhouse,
  • Andrew Gilbert,
  • Jill Boelsma,
  • George Gress,
  • Scott Weidensaul,
  • Charles Grigsby,
  • Emily Williams,
  • Laura Phillips,
  • Carol McIntyre
Evan Adams
Biodiversity Research Institute
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Ian Stenhouse
Biodiversity Research Institute
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Andrew Gilbert
Biodiversity Research Institute
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Jill Boelsma
Denali National Park and Preserve
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George Gress
None
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Scott Weidensaul
None
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Charles Grigsby
Denali National Park and Preserve
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Emily Williams
Georgetown University
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Laura Phillips
Denali National Park and Preserve
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Carol McIntyre
National Park Service
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Abstract

The Arctic Warbler (Phylloscopus borealis) is a cryptic songbird that uses a Nearctic-Paleotropical migratory strategy. Using geolocators, we provide the first documentation of the migratory routes and wintering locations of two territorial adult male Arctic Warblers from Denali National Park and Preserve, Alaska. After accounting for position estimation uncertainties and biases, we found that both individuals departed their breeding grounds in early September, stopped over in southeastern Russia and China during autumn migration, then wintered in the Philippines and the island of Palau. Our documentation of Arctic Warbler wintering on Palau suggests that additional study is needed to document their wintering range. These results suggest that Arctic Warblers may migrate further overwater than previously thought and provide hitherto unknown information on stopover and wintering locations.
09 May 2022Submitted to Ecology and Evolution
10 May 2022Assigned to Editor
10 May 2022Submission Checks Completed
11 May 2022Reviewer(s) Assigned
24 May 2022Review(s) Completed, Editorial Evaluation Pending
25 May 2022Editorial Decision: Revise Minor