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Tuesday, February 7 • 6:00pm - 9:00pm
Poster Display. Using Geolocators to Examine Seasonal Movements and Migratory Connectivity of Cerulean Warblers, a Declining Migratory Songbird That Breeds in Indiana

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AUTHORS: Garrett J. MacDonald, Ball State University; Clayton D. Delancey, Ball State University; Kamal Islam, Ball State University

ABSTRACT: The populations of many Nearctic-Neotropical migratory birds are declining. Historically, research has focused on threats on the breeding grounds, but the need for full life cycle monitoring has recently gained attention. Individual light-level data loggers, or geolocators, have become an increasingly reliable and affordable tool for examining the seasonal movements of individuals across broad spatial and temporal scales. The Cerulean Warbler, Setophaga cerulea, dependent on mature Eastern deciduous forest during the breeding season, has declined about 3% per year since 1966. It is considered “State Endangered” in Indiana. During Spring 2016, we used a canopy net in combination with audio playback of conspecific song and calls, and a decoy, to capture nine male Cerulean Warblers at our study sites in southern Indiana. These individuals were outfitted with geolocators. We aim to retrieve geolocators in Spring 2017 using the same methods previously used to capture males. Analysis of geolocator data will provide information on the movements of individuals throughout the year, allowing us to identify important staging and wintering areas and to begin to elucidate the amount of migratory connectivity shown by the Indiana population. Additionally, these efforts will aid in the conservation of the species both in Indiana and throughout its range by informing conservation actions on staging areas where birds ‘refuel’ as they make their annual migrations, and on the species’ wintering grounds.

Tuesday February 7, 2017 6:00pm - 9:00pm CST
Lancaster Ballroom