Abstract
Haliaeetus leucocephalus (Bald Eagle) is a species that congregates in communal roosting sites during the non-breeding periods of its life cycle. Wildlife agencies are directed to protect roosts, but their nocturnal usage and remote locations make them challenging to identify and monitor. We remotely identified and ground-truthed roost sites using satellite telemetry data. We delineated 13 confirmed roosts and another 34 suspected roosts. Volunteers observed 12 roosts with ground surveys and confirmed 92% were in use by eagles during their first observation. These results suggest use of eagle-tracking data to remotely identify communal roosts is a promising tool for finding and protecting eagle roosting habitat. This method can be complemented with volunteer surveys to confirm ongoing roost use.
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