Filled triangles indicate that territorial males or pairs were recorded during a breeding season in 1950-1972. Open squares indicate that nests or dependent young were recorded prior to 1950. Open triangles indicate that territorial males or pairs were recorded during a breeding season prior to 1950. The new maps were checked for errors, but there is a possibility that some errors remain. Entries with photos are marked with this icon.
All entries have distribution maps and textual descriptions.
Breeding Birds of North Dakota. Breeding Birds of North Dakota. Northern Prairie Wildlife Research Center Home Page.