Western Alaska Yellow-billed Loon Survey 2007
Bollinger K, Platte R, Stehn R, Marks D. 2008. Western Alaska Yellow-billed Loon Survey 2007. United States Fish and Wildlife Service. Fairbanks, AK. U.S.A.
We conducted an aerial survey for loons in June 2007 sampling the Seward Peninsula and Cape Krusenstern area of Western Alaska. We searched all lakes larger than 7 hectares on twenty-four 12km x 12km plots. Combined with similar data from 2005, we estimated 431 (90% confidence range = 305 - 558) yellow-billed loons with 95% of these occurring on the northern Seward Peninsula near Cape Espenberg. Including the results from 4 replicated plots, the Cape Espenberg region showed similar indices of 387 in 2005and 395 in 2007 for yellow-billed loons, and a change from 81 to 47 nests. We also estimated a total of 1371 (1049 – 1723) Pacific loons and 66 (32 - 99) red-throated loons on >7 ha lakes.
- Type
- Generic Document
- Authors
- Bollinger, Karen; Platte, Robert; Stehn, Robert; Marks, Dennis
- Date of Issue
- 2008
- Publisher
- United States Fish and Wildlife Service
- Units
- BELA , CAKR
- Keywords
- Alaska, Cape Espenberg, Cape Krusenstern, gavia adamsii, loon, Pacific loon, red-throated loon, Seward Peninsula, survey, yellow-billed loon