Great Shearwaters are common pelagic birds found off the New England coast, roughly from June through October. Frequently spotted from fishing or whale watch boats, these stiff-winged gliders may also be seen from land at select coastal sites if food and weather conditions are right.
Spending nearly all of their life at sea, it's during our white season that Great Shearwaters visit land to nest. Large flocks assemble on a small number of islands in the South Atlantic, where each successful pair raises just one chick, who, if all goes well, will fledge by mid-spring. The adults then head north for their circuit through the North Atlantic, leaving their young to fend for themselves and eventually follow.
Great Shearwaters belong to an order of seabirds known as tubenoses (Procellariiformes), so named for the tube-like structures covering their nostrils. Salt glands allow these seabirds to desalinate ocean water on demand, with excess salt being excreted in solution from their nostrils.