ROSCOMMON, Mich. – Once nearly wiped out, wood ducks are now among Michigan’s most hunted waterfowl, a turnaround driven largely by generations of conservationists hanging nest boxes in wetlands and forests.
The wood duck’s rebound is among North America’s earliest conservation success stories, an outcome of hunting regulations, habitat recovery and widespread use of nest boxes by agencies, schools and environmental groups. Today, Michigan is home to an estimated 100,000 wood ducks.
Scientists blame both extensive habitat loss and overhunting for the near loss of the species by the end of the 1800s.
Kali Rush, waterfowl specialist for the Michigan Department of Natural Resources, said the widespread use of wood duck boxes prevented the species from disappearing altogether.
The wood duck’s rebound is among North America’s earliest conservation success stories, an outcome of hunting regulations, habitat recovery and widespread use of nest boxes.Jim Hudgins/USFWS
“You can nail it up to a tree, you can put it up on a post, put a little bit of shavings in there, and the wood ducks will find them,” Rush said.
State regulators banned wood duck hunting in 1915 because of the dramatic drop in their numbers. Soon after, a national prohibition went into effect with the Migratory Bird Treaty Act (1918) and lasted for more than two decades.
Officials enforced strict bag limits when the ban was eventually lifted, and today the species is the second-most frequently shot by duck hunters in Michigan. Researchers band wood ducks each year to monitor their numbers.
Meanwhile, widespread deforestation during Michigan’s logging era wiped out much of the natural nesting habitat for wood ducks. That’s because wood ducks naturally nest in large tree cavities near water, frequently in wooded swamps or near lakes and rivers.
The wood duck’s rebound is among North America’s earliest conservation success stories, an outcome of hunting regulations, habitat recovery and widespread use of nest boxes.Mike Budd/USFWS
“It has to be perfect, too. It has to be shallow enough that the ducklings can climb out,” Rush said during a recent Nature Center Summit in Roscommon.
“It can take 80 to 100 years for a tree to really mature to the size that it can host a wood duck family,” she said.
In the 1930s, conservationists began installing wood duck boxes to supplement what remained of the wood duck’s natural nesting habitat while forested wetlands matured over the decades.
Rush said wood duck boxes became a popular outdoor environmental education project in the 1980s. Scouting troops, elementary classes, birding clubs and more began to build and take care of wood duck boxes across Michigan and other states.
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State and federal agencies now focus on habitat protection, while wood duck boxes remain a popular conservation activity for youth and environmental groups, Rush said.
Instructions for building and maintaining wood duck boxes are available on the Cornell Lab of Ornithology website.
Wood ducks are known for the drake’s bright red eyes and iridescent green crest, while females have a gray head with a white eye ring. All of Michigan falls within the nesting range, where wood ducks can produce two or more broods a year.
Contemporary threats to the species include habitat loss to urbanization, and climate change-related risks of wildfires that incinerate habitat and spring heat waves that endanger young birds in the nest, according to the nonprofit National Audubon Society.
Each nesting season, volunteers across Michigan continue to install and check on these wood duck boxes, a century-old conservation idea still supporting the state’s wildlife.