Author :
Publisher :
Page : 54 pages
File Size : 16,97 MB
Release : 2015
Category : Bird surveys
ISBN :
Provides statistical data based on ground-based nest surveys on population status, egg production, nesting effort, phenology, habitat use, and predation for the cackling Canada goose, emperor goose, greater white-fronted goose, and spectacled eider. The survey also provides statistics for the black brant, tundra swan, sandhill crane, common eider, Pacific loon, red-throated loon, glaucous gull, mew gull, Sabine's gull, and arctic tern.
Author : Julian B. Fischer
Publisher :
Page : 43 pages
File Size : 14,3 MB
Release : 2011
Category : Bird surveys
ISBN :
Provides statistical data from ground-based surveys taken to estimate numbers of nests and eggs of geese and eiders in the Yukon-Kuskokwim delta from 1985 to 2011. Of 85 plots, 82 were sampled in June 2011 in a ground survey in the Hazen Bay coastal region (from Kigigak Island to Kashunuk River). Complete statistics are given for cackling goose, emperor goose, greater white-fronted goose, black brant, tundra swan, sandhill crane, spectacled eider, common eider, glaucous gull, mew gull, Sabine's gull, arctic tern, red-throated loon, and Pacific loon. Additional statistics (on nest initiation and hatch date) are given for greater scaup/long-tailed duck, pintail/shoveler/mallard/teal, and small shorebirds and statistics for fox and vole signs.
Author : Julian B. Fischer
Publisher :
Page : 43 pages
File Size : 18,31 MB
Release : 2010
Category : Bird surveys
ISBN :
Provides statistical data from ground-based surveys taken to estimate numbers of nests and eggs of geese and eiders in the Yukon-Kuskokwim delta from 1985 to 2010. Of 85 plots, 66 were sampled in 2010 in a ground survey in the Hazen Bay coastal region (from Kigigak Island to Kashunuk River). Statistics cover cackling goose, emperor goose, greater white-fronted goose, black brant, tundra swan, sandhill crane, spectacled eider, common eider, Pacific loon, red-throated loon, glaucous gull, mew gull, Sabine's gull, and arctic tern.
Author :
Publisher :
Page : 92 pages
File Size : 45,95 MB
Release : 2013
Category : Bird surveys
ISBN :
Provides statistical data based on ground-based nest surveys on population status, egg production, nesting effort, phenology, habitat use, and predation for the cackling Canada goose, emperor goose, greater white-fronted goose, and spectacled eider. The survey also provides statistics for the tundra swan, sandhill crane, common eider, Pacific loon, red-throated loon, glaucous gull, mew gull, Sabine's gull, and arctic tern.
Author : Julian B. Fischer
Publisher :
Page : 68 pages
File Size : 38,88 MB
Release : 2007
Category : Bird surveys
ISBN :
A ground-based sampling procedure was used to monitor goose and eider nest populations and potential production on the Yukon-Kuskokwim Delta coastal zone from 1985 to 2007.
Author : Julian B. Fischer
Publisher :
Page : 39 pages
File Size : 11,10 MB
Release : 2009
Category : Bird surveys
ISBN :
Of 85 plots, 81 were sampled in a ground survey in the Hazen Bay region in the Yukon-Kuskokwim delta coastal zone (from Kigigak Island to Kashunuk River) in order to determine potential production of waterbirds, especially geese and eiders. Statistics cover cackling goose, emperor goose, white-fronted goose, black brant, tundra swan, sandhill crane, spectacled eider, common eider, Pacific loon, red-throated loon, glaucous gull, mew gull, Sabine's gull, and arctic tern.
Author : Julian B. Fischer
Publisher :
Page : 28 pages
File Size : 44,23 MB
Release : 2005
Category : Bird surveys
ISBN :
Some 85 plots were sampled in a ground survey in the Hazen Bay region (from Kigigak Island to Kashunuk River) in order to determine potential production of waterbirds, especially geese and eiders. In this Yukon-Kuskokwim delta coastal zone the increase of spectacled eider was estimated to be 29% higher since 2004. Geese production was good. Statistics include cackling goose, emperor goose, white-fronted goose, black brant, tundra swan, sandhill crane, spectacled eider, common eider, Pacific loon, red-throated loon, glaucous gull, mew gull, Sabine's gull, and arctic tern.
Author : Robert A. Stehn
Publisher :
Page : 16 pages
File Size : 28,23 MB
Release : 1990
Category : Bird surveys
ISBN :
Ground-based sampling procedure was used to estimate numbers of eggs, total nests, and active nests for cackling Canada geese, emperor geese, greater white-fronted geese, and spectacled eiders.
Author : Julian B. Fischer
Publisher :
Page : 22 pages
File Size : 31,19 MB
Release : 2003
Category : Bird surveys
ISBN :
"Production was poor for most waterfowl species in 2003. Numbers of nests were down from 2002 for geese and eiders. Depredation rates were high resulting in substantial nest destruction and egg loss. Predation by arctic foxes contributed significantly to poor production."--Page [1].
Author : Timothy Dale Bowman
Publisher :
Page : 48 pages
File Size : 26,62 MB
Release : 2002
Category : Bird surveys
ISBN :
