2009 Waterfowl Breeding Population and Habitat Survey
"The preliminary estimate of total ducks from the 2009 Waterfowl Breeding Population and Habitat Survey was 42 million, which is 13 percent greater than last year’s estimate and 25 percent greater than the 1955-2008 average, the U.S. Fish and Wildlife Service announced today.

The Waterfowl Breeding Population and Habitat Survey samples more than two million square miles of waterfowl habitat across the north-central and northeastern United States, south-central, eastern, and northern Canada, and Alaska. The survey estimates the number of ducks on the continent's primary nesting grounds.

Overall, habitat conditions for breeding waterfowl in 2009 were better than conditions in 2008. The total pond estimate (Prairie Canada and United States combined) was 6.4 million. This was 45 percent above last year’s estimate of 4.4 million ponds and 31 percent above the long-term average of 4.9 million ponds..."