A fence went up, and the terns came back: Delaware's rarest beach birds tripled their chicks

On two Delaware beaches, a simple idea did what years of hoping could not. Rangers put new predator fencing around the nesting colonies of least terns — small, state-endangered seabirds — at Cape Henlopen State Park and Fowler Beach, keeping foxes and other hunters away from the eggs. The birds answered at once: breeding pairs climbed from 127 to 208, numbers last seen in the late 1990s, and chicks raised to flying age jumped from 45 in 2025 to 138 this year. The safer beaches drew in neighbours, too — piping plovers nested in record numbers at Cape Henlopen, and a pair of common terns nested in the park for the first time since the 1990s. Sometimes conservation is not a grand invention. Sometimes it is a fence, put in the right place, by people who keep showing up.

SDG 15 · Life on land — Mechanism: infrastructure build