Developers and wildlife officials are keeping an eagle-eye on a bird nest that might hinder construction plans at the former Philadelphia Navy Yard.

The first bald eagle nest in the city in more than 200 years is on a South Philadelphia site targeted for a $150 million wholesale produce market and a massive maritime terminal.

The birds are currently protected by the federal Endangered Species Act, meaning nearby development plans could be altered, delayed or even halted.

But the U.S. Fish and Wildlife Service is expected to delist the eagle in June because it has rebounded so significantly. That could soften the restrictions on development near bald eagle nests.

“It would be really nice if they’re able to find some way to make a project go forward on this site and still accommodate the eagles,” said Tim Male, senior ecologist with the advocacy group Environmental Defense. “You might even have a new tourist attraction on your hands.”

The state’s Department of General Services, which has taken charge of building the produce market, said officials are committed to the project and are investigating remedies under the Endangered Species Act.

Bald eagles were upgraded from endangered to threatened status by the federal government in 1995 and by the state a decade later. State officials said last year that they had confirmed more than 100 bald eagle nests in Pennsylvania for the first time in more than a century.