Colorado Parks & Wildlife - Species Data - Great Blue Heron Foraging Area
Colorado Parks and Wildlife Biologists, District Wildlife Managers, and Researchers
GBHeronForagingArea is an ESRI SDE Feature Class showing Foraging Areas for Great Blue Heron (Ardea herodias) in Colorado. Foraging Areas are defined as areas where Great Blue Herons are known to feed. Appropriate habitat includes shallow water areas associated with reservoirs, lakes, ponds, streams, and backwater areas of major rivers with abundant fish populations. On large irrigation reservoirs, these areas will fluctuate with changing water levels. 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).