An aerial view of Falkner Island, home to the only roseate tern nesting colony in Connecticut Photo: U.S. Coast Guard Auxiliary
The roseate tern is a federally endangered seabird whose favored nesting areas are found on rocky offshore islands and barrier beaches along the north Atlantic coast of the U.S.
Unfortunately, the tern is losing some of its prime seacoast habitat. The land is disappearing due to erosion that may be made worse by climate change. Increasing atmospheric temperatures are linked to rising seas and more intense storms, which eat away at the shore.
Falkner Island, off the Connecticut coast in Long Island Sound, is home each spring to 40 to 50 pairs of nesting roseate terns – the only colony remaining in the state. Most of the terns nest on the north spit of the island, a sand and cobble environment.
Falkner Island is a unit of the Stewart B. McKinney National Wildlife Refuge in Connecticut. Refuge Manager Rick Potvin estimates that the island is losing about 300 to 400 square feet of land each year due to erosion. He predicts that in the next few years the north spit nesting area will revert to tidal zone and will become unsuitable habitat for breeding terns.