A population estimate of tundra swans on western Alaska nesting habitats - 1991
US Fish and Wildlife Service. 1991. A population estimate of tundra swans on western Alaska nesting habitats - 1991
Western Alaska annually summers the bulk of the western population of Tundra Swans wintering in North America. The U.S. Fish and Wildlife Service completed the first coordinated, random plot survey for this area during August of 1991. The survey method used fixed, high wing aircraft to conduct a complete search of a simple random sample of 1/5 of the 1735 quarter sections of 1:63,360 scale U.S. Geological Survey maps thought to contain swan habitat plus all 30 quarters on Kodiak Island (Figure 1). All swan sightings were recorded directly onto maps by position, number and category. A more complete report with further analyses will follow.
- Type
- Unpublished Report
- Authors
- US Fish and Wildlife Service
- Date of Issue
- 1991-09
- Units
- KATM
- Keywords
- Alaska, Bristol Bay, Migratory bird management, Nesting habitats, Tundra Swans, Western Alaska