EarthWorks Geospatial Catalog

Colonial Nesting Waterbirds

These sites represent areas where more than 100 pairs of colonial nesting waterbirds have been observed during surveys. Data includes surveys from 1994 and 2006. Observed species may include Common Terns, Least Terns, Roseate Terns, Arctic Terns, Leach's Storm-Petrels, Double-crested Cormorants, Herring Gulls, Great Black-backed Gulls, Laughing Gulls, Black Skimmers, Great Egrets, Snowy Egrets, Cattle Egrets, Little Blue Herons, Black-crowned Night Herons, and Glossy Ibis. Sites delineated solely for tern species were excluded since other data captured tern colonies. The sites were buffered 0.3 nautical miles.
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