2012 Population Estimates

Mallard Population Estimates

Mallard Population Estimates

The estimated mallard (Anas platyrhynchos) abundance was 10.6 ± 0.3 million, which was 15% above the 2011 estimate of 9.2 ± 0.3 million, and 40% above the long-term average of 7.6 ± 0.04 million.

Gadwall Population Estimates

Gadwall Population Estimates

Estimated abundance of gadwall (A. strepera; 3.6 ± 0.2 million) was similar to the 2011 estimate and 96% above the long-term average (1.8 ± 0.02 million).

American Wigeon Population Estimates

American Wigeon Population Estimates

The estimate for American wigeon (A. americana; 2.1 ± 0.1 million) was similar to the 2011 estimate and 17% below the long-term average of 2.6 million ± 0.02 million.

Green-winged Teal Population Estimates

Green-winged Teal Population Estimates

The estimated abundance of green-winged teal (A. crecca) was 3.5 ± 0.2 million, which was 20% above the 2011 estimate and 74% above the long-term average (2.0 ± 0.02 million).

Blue-winged Teal Population Estimates

Blue-winged Teal Population Estimates

The estimate of blue-winged teal (A. discors) was 9.2 ± 0.4 million, which was similar to the 2011 estimate and 94% above the long-term average of 4.8 ± 0.04 million.

Northern Pintail Population Estimates

Northern Pintail Population Estimates

The estimate for northern pintails (A. acuta; 3.5 ± 0.2 million) was 22% below the 2011 estimate of 4.4 ± 0.3 million and 14% below the long-term average of 4.0 ± 0.04 million.

Northern Shoveler Population Estimates

Northern Shoveler Population Estimates

The northern shoveler (A. clypeata) estimate was 5.0 ± 0.3 million which was similar to the 2011 estimate and 111% above the long-term average of 2.4 ± 0.02 million .

Redhead Population Estimates

Redhead Population Estimates

Redhead abundance (Aythya americana; 1.3 ± 0.1 million) was similar to the 2011 estimate and 89% above the long-term average of 0.7 ± 0.01 million.

Canvasback Population Estimates

Canvasback Population Estimates

The canvasback estimate (A. valisineria; 0.8 ± 0.07 million) was similar to the 2011 estimate and 33% above the long-term average of 0.6 ± 0.01 million.

Scaup Population Estimates

Scaup Population Estimates

Estimated abundance of scaup (A. affinis and A. marila combined; 5.2 ± 0.3 million) was 21% above the 2011 estimate and similar to the long-term average of 5.0 ± 0.05 million.

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