Several puddle duck species increased in 2019. Gadwall jumped about 13 percent to 3.26 million, about 61 percent higher than their long-term average. Mallards were up about 2 percent at 9.42 million, about 19 percent higher than their long-term average. Green-winged teal increased about 4 percent to 3.18 million, which is 47 percent higher than their long-term average. American wigeon essentially held steady at 2.83 million and remain 8 percent higher than their long-term average.
Blue-winged teal displayed the largest decrease in puddle ducks, dropping about 16 percent to 5.43 million but remaining about 6 percent higher than their long-term average. Northern shovelers decreased about 13 percent to 3.65 million but were about 39 percent higher than their long-term average. Pintails were down about 4 percent at 2.27 million and remain about 40 percent lower than their long-term average.
Some diving ducks didn’t fare well. Redheads decreased about 27 percent to about 730,000 but remain at their long-term average. Canvasbacks decreased about 5 percent to about 650,000 but are about 10 percent higher than their long-term average. Scaup declined about 10 percent to 3.59 million, which is about 28 percent lower than their long-term average.
May pond counts decreased about 5 percent overall and were 5 percent lower than the long-term average, but that varied by region. In the north-central United States (Montana and the Dakotas), pond counts were up about 36 percent. However, prairie and parkland Canada—Alberta, Saskatchewan, and Manitoba—were dry, and ponds decreased by about 22 percent.
“Important breeding areas in southern Alberta and Saskatchewan were much drier than last year, which contributes to reduced numbers of breeding waterfowl observed in the survey,” said Dr. Tom Moorman, chief scientist for Ducks Unlimited. “Fortunately, eastern North Dakota and South Dakota saw an increase in both ponds and breeding waterfowl, especially mallards, blue-winged teal, gadwalls, northern shovelers, and northern pintails. Typically, when the Dakotas are wet and southern Alberta and Saskatchewan are dry, we see the aforementioned species settle in the Dakotas, reminding us that we must conserve habitat across the prairies because it is rare for the entire Prairie Pothole Region to be wet.”
Overall, Canada goose numbers varied somewhat but remained strong overall. Some spring light-goose populations were down, as the 2018 hatch was poor in many areas. Spring 2019 nesting conditions for North American geese were generally fair to good, the USFWS said.
Atlantic Flyway
In 2018, declines in northern Atlantic mallard and Canada goose populations prompted the USFWS to reduce opportunities for those species in 2019-’20. The daily mallard bag limit has been reduced from four to two, only one of which can be a hen. In Atlantic Flyway states north of Chesapeake Bay—Maine, Vermont, Connecticut, New York, Pennsylvania, and New Jersey—the Canada goose limit has been cut from three birds to two. In the Chesapeake Bay region (Maryland, Delaware, and Virginia), the limit has decreased from two to one. The season length for all states has been cut to 30 days. Those changes do not apply to North Atlantic or resident-population Canada goose zones.
Spring duck numbers from the USFWS’ Eastern Survey Area were mixed. Mallards dipped about 2 percent to 1.05 million birds and are 16 percent lower than the long-term average. Green-winged teal exhibited the largest decrease, declining about 11 percent, or 19 percent lower than their long-term average. However, goldeneyes, black ducks, and ring-necked ducks increased 5, 5, and 10 percent, respectively.
A July 30 report on the Maryland Department of Natural Resources' website said a computer model that uses the average May temperature and June snowfall to predict the ratio of young to adult geese banded in August suggests that 2019 was a good production year at the Ungava Bay coast. The USFWS report said spring rainfall was higher than average in most areas of the Atlantic Flyway, but overall habitat conditions and nesting efforts generally looked average or good. Atlantic Flyway resident goose numbers increased by about 1 percent.
Mississippi Flyway
Spring conditions were generally wet throughout production states, and duck numbers seemed solid. Minnesota's total duck estimate was 10 percent lower than the 2018 figure but 5 percent higher than the long-term average. Michigan and Wisconsin's total duck numbers were similar to those of 2018, but Michigan was about 47 percent lower than the long-term average, and Wisconsin's figure was similar to the long-term average. Likewise, those states had mallard estimates that were similar to 2018 figures. Minnesota and Wisconsin's numbers were similar to long-term averages, but Michigan's estimate was 47 percent lower than the long-term average.
Observers are predicting a bumper crop of wood ducks, which are tree-nesting ducks not tallied in federal surveys. Wisconsin’s Spring 2019 waterfowl survey estimated the state’s wood duck population at about 100,027, which was similar to the 2018 estimate but about 24 percent higher than the long-term average.
Spring numbers of Mississippi Flyway giant Canada geese were down about 4 percent from 2018 but still up 1 percent in the 10-year trend. Southern Hudson Bay geese were also down about 4 percent. The USFWS report said habitat and productivity seemed to be average to higher than average in many northern and central states but below average in some southern states. Biologists reported higher-than-average numbers of molt migrant geese in areas of Hudson Bay, indicating the overall nesting effort in the flyway might have been lower than average.
Central Flyway
In the eastern Dakotas, the mallard estimate was 54 percent higher than the 2018 count and 117 percent higher than the long-term average. Pintails in that region jumped 64 percent, bluewings rose 19 percent and total ducks were up 29 percent.
“Many pintails settled in the Dakotas seeking better water conditions, as did all ducks,” Rohwer said. “But the core of the pintail’s traditional breeding range is in southern Alberta, where they’re down 79 percent, and southern Saskatchewan, where they’re down 85 percent. More than a million pintails — almost half the breeding population — settled in the U.S. prairie this year.”
Rohwer said exceptionally wet conditions throughout America’s prairies should result in strong duck production. Those conditions actually improved during breeding season, with temporary and seasonal wetlands retaining water into July and August.... Continued