2010 Population Estimates

Total Breeding Duck Population Estimates

Total Breeding Duck Population Estimates

In the traditional survey area, which includes strata 1-18, 20-50, and 75-77, the total duck population estimate (excluding scoters [Melanitta spp.], eiders [Somateria spp. and Polysticta stelleri], long-tailed ducks [Clangula hyemalis], mergansers [Mergus spp. and Lophodytes cucullatus], and wood ducks [Aix sponsa]) was 40.9 million birds. This estimate was similar to last year’s estimate of 42 million birds, and was 21% above the long-term average.

Mallard Population Estimates

Mallard Population Estimates

Estimated mallard (Anas platyrhynchos) abundance was 8.4 ± 0.3 million birds, which was similar to the 2009 estimate of 8.5 ± 0.2 million birds and 12% above the long-term average.

Northern Pintail Population Estimates

Northern Pintail Population Estimates

Estimated abundance for northern pintails (A. acuta) was 3.5 ± 0.2 million, which was similar to the 2009 estimate, and 13% below the long-term average of 4 million.

Blue-winged Teal Population Estimates

Blue-winged Teal Population Estimates

Estimated abundance of blue-winged teal (A. discors) was 6.3 ± 0.4 million, which was 14% below the 2009 estimate and 36% above their long-term average of 4.7 million.

Green-winged Teal Population Estimates

Green-winged Teal Population Estimates

Estimated abundance of green-winged teal (A. crecca) was 3.5 ± 0.2 million, which was similar to the 2009 estimate and 78% above their long-term average of 1.9 million.

American Wigeon Population Estimates

American Wigeon Population Estimates

Estimated abundance of American wigeon (A. americana) was 2.4 million, which was similar to 2009 and the long-term average.

Gadwall Population Estimates

Gadwall Population Estimates

Estimated abundance of gadwall (A. strepera) was 3.0 ± 0.2 million, which was similar to the 2009 estimate and 67% above the long-term average.

Scaup Population Estimates

Scaup Population Estimates

Estimated abundance of scaup (A. affinis and A. marila combined) was 4.2 ± 0.2 million, which was similar to that of 2009 and 16% below the long-term average of 5.1 ± 0.05 million.

Northern Shoveler Population Estimates

Northern Shoveler Population Estimates

Estimated abundance of northern shovelers (A. clypeata) was 4.1 ± 0.2 million, which was similar to their 2009 estimate and was 76% above their long-term average of 2.3 million.

Redhead Population Estimates

Redhead Population Estimates

Estimated abundance of redheads (Aythya americana) was 1.1 ± 0.1 million, which was similar to their 2009 estimate and 63% above their long-term average of 0.7 million.

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