2013 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 elleri], long- tailed ducks [Clangula hyemalis], mergansers [Mergus spp. and Lophodytes cucullatus], and wood ducks [Aix sponsa]) was 45.6 million birds. This represents a 6% decrease over last year's estimate of 48.6 million, and is 33% higher than the long-term average.

Mallard Population Estimates

Mallard Population Estimates

The estimated mallard (Anas platyrhynchos) abundance was 10.4 ± 0.4 million, which was similar to the 2012 estimate, and 36% above the long-term average of 7.6 ± 0.04 million.

Northern Pintail Population Estimates

Northern Pintail Population Estimates

The estimate for northern pintails (A. acuta; 3.3 ± 0.2 million) was similar to the 2012 estimate and 17% below the long-term average of 4.0 ± 0.04 million.

Blue-winged Teal Population Estimates

Blue-winged Teal Population Estimates

The estimate of blue-winged teal (A. discors) was 7.7 ± 0.4 million, which was 16% below the 2012 estimate and 60% above the long-term average of 4.8 ± 0.4 million.

Green-winged Teal Population Estimates

Green-winged Teal Population Estimates

The estimated abundance of green-winged teal (A. crecca) was 3.1 ± 0.2 million, which was similar to the 2012 estimate and 51% above the long-term average (2.0 ± 0.02 million).

American Wigeon Population Estimates

American Wigeon Population Estimates

The estimate for American wigeon (A. americana; 2.6 ± 0.1 million) was 23% above the 2012 estimate of 2.1± 0.1 million and similar to the long-term average of 2.6 ± 0.02 million.

Gadwall Population Estimates

Gadwall Population Estimates

Estimated abundance of gadwall (A. strepera; 3.3 ± 0.2 million) was similar to the 2012 estimate and 80% above the long-term average (1.9 ± 0.02 million).

Scaup Population Estimates

Scaup Population Estimates

Estimated abundance of scaup (A. affinis and A. marila combined; 4.2 ± 0.3 million) was 20% below the 2012 estimate and 17% below the long-term average of 5.0 ± 0.05 million.

Northern Shoveler Population Estimates

Northern Shoveler Population Estimates

The northern shoveler (A. clypeata) estimate was 4.8 ± 0.2 million which was similar to the 2012 estimate and 96% above the long-term average of 2.4 ± 0.02 million .

Redhead Population Estimates

Redhead Population Estimates

Redhead abundance (Aythya americana; 1.2 ± 0.09 million) was similar to the 2012 estimate and 76% above the long-term average of 0.7 ± 0.01 million.

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