Friday, January 27th, 2023
Friday, January 27th, 2023

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Vermont’s grassland bird populations in decline

Bobolinks are one of several species of grassland birds seeing declines in population in Vermont. (Vermont Fish & Wildlife)

MONTPELIER, Vt. – Grassland-nesting bird population numbers continue to decline in Vermont, according to recent surveys conducted by the Vermont Fish & Wildlife Department and the U.S. Fish and Wildlife Service.

Bird species that nest in grasslands include vesper sparrows, grasshopper sparrows, bobolinks, and eastern meadowlarks, among others. The birds nest in hayfields or cow pastures, and are threatened by changes in agricultural and land use practices, according to biologist John Buck of the Vermont Fish & Wildlife Department.

“Grassland birds face unique conservation challenges in Vermont because the remaining habitat they depend on is now largely landowner-maintained agricultural hayfields,” said Buck. “As a result, conservationists have been working closely with farmers and landowners to attempt to provide appropriate habitat for these species.”

The history of grassland bird nesting over the past two centuries follows closely with changes in agricultural practices in North America. When eastern forests were converted into pasture for sheep and cows, grassland birds began nesting in these newly created grassland habitats. As natural prairies in the midwestern and western states and provinces were plowed under to make way for corn and soy crops in the twentieth century, nesting grounds for these bird species were lost. Additionally, as eastern pastures began once again reverting to forests, this further reduced grassland bird habitat continent-wide and contributed to the birds’ decline.

“Vermont’s remaining grassland habitat is mowed earlier and more frequently, and now occurs at the same time grassland species are in the height of their nesting season,” said Buck. “At the same time, old fields are being replaced with residential and commercial developments, including solar energy projects, which further removes available nesting sites for these birds.”

According to Buck, landowners who mow their fields for aesthetic reasons can maintain these fields and accommodate the nesting birds simply by cutting later in the summer. He recommends an August 1 start date.

Farmers and other landowners who maintain hayfields and grazing pastures who wish to share space with the grassland birds can do so through the Bobolink Project. The Bobolink Project uses donated funds to provide financial assistance to participating farmers who modify their mowing schedules so that nesting grassland birds can successfully raise their young. This year, the project worked with 17 farmers to protect more than 600 acres of grassland habitat.

For more information go to, or for landowner management assistance see

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