The century-old dam is a crucial one. Not only is it responsible for maintaining the water level in South Pond, but it also controls the flow of water out of the pond and into the lowlands.

A chick feeds on Bald Hill Pond in Westmore VT in 2019. Photo courtesy of Lorna Kane-Rohloff These days, birds are susceptible to a scourge of threats — pests, diseases, habitat loss and climate ...