This winter saw an increase in waterfowl along Maryland’s Chesapeake Bay shoreline and Atlantic coast.
While pilots and biologists from the U.S. Fish and Wildlife Service (USFWS) and Maryland Department of Natural Resources (DNR) counted fewer diving and dabbling ducks this winter than they did in the 2012 Midwinter Waterfowl Survey, these same crews counted more geese.
According to a DNR news release, both Canada geese and snow geese were “noticeably more abundant during this year’s survey,” with crews counting 462,000 Canada geese—a three-year high—and 83,300 snow geese—a five-year high. Biologists have attributed the boost in goose numbers to two factors: last spring’s successful nesting season and December snow cover in New York and southern Canada, which encouraged geese to migrate into the Bay region right before the survey was taken.
While more geese could mean more damage to area farms—as the birds forage on green cover crops and grain crops—most farmers “have learned to deal with the problem,” said Larry Hindman, wildlife biologist and Waterfowl Project Leader with DNR. Fluttering plastic flags, bald eagle effigies placed in the middle of fields and the loud bang of a rifle or shotgun have all proven effective at deterring persistent geese, Hindman said, and those farmers who need extra help can find assistance and advice in the U.S. Department of Agriculture’s Wildlife Damage Management program.
Resident Canada geese can pose a problem for rural, suburban and urban residents alike, and are considered overabundant in the region. While the birds do provide hunters with a chance for recreation, resident geese can overgraze wetlands and lawns and leave their droppings to pollute local rivers and streams. While the Midwinter Waterfowl Survey does not make a distinction between resident and migratory geese—as both stocks look the same during an aerial survey—DNR researchers do monitor the resident population using leg bands recovered from hunters.
The Midwinter Waterfowl Survey is used as an index of long-term wintering waterfowl trends. The estimates measure waterfowl populations along the Atlantic Flyway, which is a bird migration route that follows North America’s Atlantic Coast and Appalachian Mountains.
Read the full waterfowl survey results on the DNR website.
Part construction site, part mud pit and part wildlife refuge, the Paul S. Sarbanes Ecosystem Restoration Project at Poplar Island, Md., tackles two unique challenges in the Chesapeake Bay.
First, sand and sediment accumulate in the Bay’s vital shipping channels—particularly during heavy rain events like Tropical Storm Lee in 2011—and threaten to block cargo ships that allow the Port of Baltimore to contribute $2 billion each year to the region’s economy.
On the other hand, sea level rise, sinking land and increasingly frequent strong storms are quickly eroding away the Bay’s few remaining islands, threatening the survival of iconic wildlife species and critical habitat.
Poplar Island, for example, spanned more than 1,100 acres in the mid-1800s and supported a small community of families, farmers and fishermen until it was abandoned in the 1930s. When restoration began in the 1990s, four scattered acres were all that remained—less than half a percent of the island’s historical size.
But the island that was nearly destroyed is now destined to be rebuilt using 65 million cubic yards of sedimentary silt—imagine a giant cube of mud a quarter mile long in each direction—dredged up from the bottom of the Bay.
In 1998, the U.S. Army Corps of Engineers began to construct stone “containment dykes.” The walls are 10 feet tall and surround Poplar Island’s former footprint, and the island has been divided into six massive containment cells for building island habitat.
The western half of the island, surrounded by an inner ring of 27-foot dykes, is being transformed into 570 acres of forested upland island habitat similar to that of neighboring Coaches Island.
Coaches Island, once vulnerable to the same forces that washed away its neighbor, supports upland species like bald eagles and provides a shallow inlet utilized by nesting diamondback terrapins in the summer and migratory waterfowl during winter.
The eastern half of Poplar Island is further divided into 14 “sub-cells” undergoing various stages of wetland construction and management.
Low-lying wetlands are created through a four-step process. First, dredged sediment is brought in on barges by the Maryland Port Administration, mixed into a watery slurry, and pumped into each cell at precise levels.
As the slurry dries, it forms a massive crust—a vast, other-worldly landscape—that is the base for building habitat.
Next, heavy machines carefully grade the crust and excavate ditches that will function as tidal creeks in the completed marsh.
Then a spillway is opened to expose the new landscape to tidal flow, and water is allowed to move between the Bay and the newly built marshland.
Finally, individual plugs of smooth and saltmeadow cordgrass are planted row upon row into the nutrient-rich soil.
These native plants are capable of withstanding strong storms while offering food and shelter to the 175 species of shorebirds, songbirds, waterfowl and raptors that now visit Poplar Island.
Poplar Island's marshes offer protection and isolation from human and mammalian predators, and the open waters along its perimeter provide feeding opportunities for diving ducks like buffleheads, scaups and long-tailed ducks.
The U.S. Fish and Wildlife Service (USFWS) manages the island’s vegetation and wildlife—including less welcome species like the Canada goose. Fences and fluttering pink flags help deter geese and prevent them from overfeeding on expensive marsh grass.
On our visit in January 2013, USFWS wildlife technician Robbie Callahan led a monitoring team to assess the density of muskrat huts in the marsh. The semiaquatic rodents, though a critical part of the wetland ecosystem, are controlled to prevent damage from overpopulation.
The USFWS also monitors avian predators—like the northern harriers that feed on small rodents—and migratory waterfowl, attracted to Poplar Island during their spring and fall trips along the Atlantic Flyway.
With the help of USFWS experts, Poplar Island is able to provide a range of Bay species with the safe nesting habitat that only a protected, well-managed island can.
Even sunken barges—placed here in the mid-1990s as “breakwaters” in an attempt to retain the island’s remnants—have become host to nesting ospreys and black-crowned night herons.
According to the USFWS, Poplar Island is well on its way to becoming a keystone wildlife refuge. “Poplar Island is an important refuge,” said USFWS biologist Pete McGowan, who specializes in waterfowl and island restoration. “There are species that are highly dependent on these remote island habitats. And this is a habitat type that is rapidly disappearing from the Chesapeake Bay. We need to do what we can to maximize the remaining island habitat that we have, and create new island habitat whenever possible.”
The Paul S. Sarbanes Ecosystem Restoration Project is scheduled for completion in 2041, with a final price tag estimated at $1.4 billion over 45 years. Rebuilding Poplar Island is an enormous, expensive and painstaking process—but its virtues of “beneficial use” have been extolled throughout the conservation and business communities alike, and it has become a "win-win" for the Bay and all the watershed provides.
View more photos on the Chesapeake Bay Program Flickr page.
The U.S. Fish and Wildlife Service has purchased 825 acres of land along the Nanticoke River on Maryland’s Eastern Shore to expand Blackwater National Wildlife Refuge.
The purchase conserves two tracts of land: one along a section of the Nanticoke River near Vienna and another to the north on Marshyhope Creek near Brookview.
The land has been identified as prime habitat for migratory waterfowl such as black ducks, blue-winged teal and wood ducks, as well as for bald eagles and the endangered Delmarva fox squirrel. Additionally, the southern land tract is located along the Nanticoke section of the Captain John Smith Chesapeake National Historic Water Trail.
Blackwater National Wildlife Refuge is one of the nation’s premier national wildlife refuges. It consists of more than 27,000 acres, including one-third of Maryland’s tidal wetlands and some of the most ecologically important areas in the state.
Visit Blackwater National Wildlife Refuge’s website to learn more about the refuge and the expansion.
I have come across quite a few hobbies and crafts in my day that I never knew existed. When we visited the Decoy Museum in Havre de Grace recently, I was introduced to yet another.
If you haven’t had a chance to check out the museum and you are in the area, I would suggest taking a few minutes out of your day to do so. The decoys really are works of art.
The museum displays hundreds of these creations, but also gives a detailed history of the art form itself. You can see a few examples in the photo slideshow below.
While we were there, we took some time to get out and take some pictures of the shoreline and wildlife. As the weather continues to warm, we look for more and more of these opportunities.
Do you have any memories associated with decoys or waterfowl? We’d love to hear from you, leave a response below.
Scientists observed more than 640,000 ducks, geese and swans along Maryland’s Chesapeake Bay shoreline this winter as part of the U.S. Fish & Wildlife Service and Maryland Department of Natural Resources’ annual Midwinter Waterfowl Survey. This is a decline from 2010, when approximately 787,000 waterfowl were counted.
The decline is largely due to fewer Canada geese and snow geese being counted for the survey. Large numbers of geese likely went undetected because they were on farms and other inland habitats. Overall, the wintering Canada geese remained high.
More ducks were counted in 2011 (199,300) than in 2010 (173,700) due to snow and cold weather north of Maryland, according to DNR. In particular, there were more mallards and canvasbacks, as well as an exceptional number of gadwalls on the Susquehanna Flats.
The Midwinter Waterfowl Survey has been conducted annually throughout the United States since the early 1950s. Maryland survey results are ultimately pooled with results from other states to measure wintering waterfowl distribution and populations throughout the Atlantic Flyway, according to DNR Waterfowl Project Leader Larry Hindman.
“The survey is conducted in a coordinated manner across the Atlantic Flyway states to provide an annual index of the population size for important waterfowl species like black ducks, Atlantic brant and tundra swans,” Hindman said.
Visit Maryland DNR’s website to view the full survey results.