Occurrence, abundance, and habitat use of birds along the northcentral Alaska peninsula, 1976-1980

Between spring 1976 and fall 1980 we studied the occurrence, abundance, and habitat use of birds over a 2000 km² segment of the northcentral Alaska Peninsula. During this period observers were present 473 days and obtained records for all seasons. The avifauna was found to be predominantly a mixture of Panboreal (39%), North American (34%), and Aleutican (19%) species with the Aleutican group dominant in terms of numbers and biomass. A total of 125 species was recorded: 63% (79 of 125) were water-associated. Forty-two species were confirmed breeding in the area and another 19 were suspected of breeding. The majority of species occurred as migrants; 11 were considered permanent residents and an additional 23 were winter residents. Our observations extended the known Alaska breeding distribution of American wigeon (Anas americana), black turnstone (Arenaria melanocephala), northern phalarope (Phalaropus lobatus), short-billed dowitcher (Limnodromus griseus), western sandpiper (C. mauri), dunlin (Calidris alpina), horned puffin (Fratercula corniculata), tufted puffin (Lunda cirrhata), and orange-crowned warbler (Vermivora celata). Our observations also extended the known postbreeding range or significantly changed the known status of bar-tailed godwit (Limosa 1apponica), whimbrel (Numenius phaeopus), lesser yellowlegs (Tringa flavipes), long-billed dowitcher (Limnodromus scolopaceus), dunlin (C. alpina), marbled murrelet (Brachyramphus marmoratus), American robin (Turdus migratorius), yellow-rumped warbler (Dendroica coronata), and dark-eyed junco (Junco hyemalis). The area is a principal late summer and fall molting and staging area for several species of arctic and subarctic nesting waders and seaducks and emperor geese (Anser canagica). From late September through mid-October densities of water birds on littoral and nearshore areas approached 1000 birds km⁻². These densities were exceeded many fold for certain species on particular habitat types in the area.

Data and Resources

Additional Info

Field Value
Maintainer Brent Frakes
Last Updated July 31, 2019, 01:21 (CDT)
Created July 31, 2019, 01:21 (CDT)
Identifier FWS_ServCat_69812
Issued 1980-01-01
Modified 1980-01-01
Theme ["Unpublished Report"]
accessLevel public
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