June 30, 2021 — Red knot shorebirds make epic annual migrations, some logging up to 18,000 miles from the southern tip of South America to Canada and back, dropping down onto Delaware Bay beaches in May to gorge on horseshoe crab eggs.
That ancient pattern was disrupted by overharvesting of horseshoe crabs for commercial fishing bait in the 1990s. Biologists say neither the crab nor red knot populations have fully recovered yet.
Now, the prospect of dozens, perhaps hundreds of wind turbines spinning over waters on the East Coast outer continental shelf raises questions of how those structures may affect the red knot, considered a threatened species by the U.S. Fish and Wildlife Service.
Developers Atlantic Shores Offshore Wind LLC engaged one of the world’s top experts to find out.
“The birds jump off from Cape Cod, Brigantine, Stone Harbor,” said Larry Niles, ticking off coastal Massachusetts and New Jersey feeding grounds for the red knots. “We know the birds are going through the wind (power) areas.”
As the former chief of New Jersey’s Endangered and Non-Game Species Program, Niles started the Delaware Bay Shorebird Project, now in its 25th year of monitoring the migration. He’s now principal of Wildlife Restoration Partners, with years of experience assessing the health of red knots with other shorebirds and working on wind power studies.