Colorado Parks & Wildlife - Species Data - Bald Eagle Communal Roosts
Colorado Parks and Wildlife Biologists, District Wildlife Managers, and Researchers
BaldEagleCommunalRoosts is an ESRI SDE Feature Class showing communal roost sites for Bald Eagle (Haliaeetus leucocephalus) in Colorado. Communal Roost Sites are defined as groups of or individual trees that provide diurnal and/or nocturnal perches for more than 15 wintering bald eagles; these trees are usually the tallest available trees in the wintering area. This information was derived from field personnel. A variety of data capture techniques were used including drawing on mylar overlays at 1:50,000 scale USGS county mapsheets and implementation of the SmartBoard Interactive Whiteboard using stand-up, real-time digitizing at various scales (Cowardin, M., M. Flenner. March 2003. Maximizing Mapping Resources. GeoWorld 16(3):32-35).