One of the most beloved birds in Maine is having one of its most productive seasons in years for mating pairs on remote islands off the state’s coast.

Atlantic puffins, with their colorful beaks and waddling walks, are one of New England’s best-recognized seabirds. Maine is the only state in the U.S. where the birds breed, and they do so on hard-to-reach places such as Seal Island National Wildlife Refuge in the Gulf of Maine.

The birds are well on their way to setting a record for the number of breeding pairs, said National Audubon Society scientist Dr. Stephen Kress, who has studied the birds for years. Kress said nearly 750 pairs nested on Seal Island and Eastern Egg Rock in 2018, and this year’s number will likely be higher.

The birds are thriving because of multiple factors, including an abundance of the type of fish they’re best suited to eat, such as young haddock and hake and herring. In some previous years, the birds have suffered because those fish were less available, replaced by fish that are more difficult for them to digest. The appearance of the more ideal fish could have to do with the Gulf of Maine running somewhat cool recently.

Research assistant Michael Rickershauser is dive-bombed by common terns as he records data in their nesting colony on Eastern Egg Rock, off the coast of Maine. Padding under his hat helps soften the jab of the pointed beak. The aggressive terns provide protection for puffins by chasing off predatory gulls. Robert F. Bukaty/Associated Press

A lot of puffins also laid eggs slightly early this year, which suggests the parents are in good condition, Kress said. He cautioned that the birds’ breeding success has fluctuated in the past, so this year’s good news might not be evidence of a long-term trend.

“This is a good year. But I think the message really is this – in recent years, especially since the big heat wave of ’12 and ’13, we’ve seen a pattern of good year alternating with not-so-good year,” Kress said. “We’re very much in a system of a roller coaster as far as the puffins go.”

Atlantic puffins are listed as vulnerable by the International Union for Conservation of Nature, and they number about 1,300 pairs in Maine. The birds live on both sides of the northern Atlantic Ocean, and face threats such as warming ocean temperatures, fluctuations in food availability and predators.

The largest puffin colony in the Gulf of Maine is on Machias Seal Island, a disputed island on the U.S.-Canada water border that is home to 5,000 to 6,000 pairs. Those birds are also having a successful year, said Heather Major, associate professor in the biological sciences department at the University of New Brunswick in Canada.

National Audubon Society scientist Dr. Stephen Kress watches Atlantic puffins from a blind on Eastern Egg Rock off the coast of Maine on July 18. In 1973, Kress began his project to restore puffins to their original nesting colonies on Maine islands. This year he expects the birds to set a record for the highest population of breeding pairs. Robert F. Bukaty/Associated Press

The birds can suffer when waters warm and squid and butterfish, which aren’t good puffin food, dominate local waters, Major said. But the Gulf of Maine is a little cooler than last year, and good prey has been abundant, she said. The island is around its long-term average of 56 percent of eggs producing a successful chick, Major said.

“There were lots of puffins around this year,” she said. “This year it seems more stable.”

The puffins of Seal Island National Wildlife Refuge are the subject of a popular “puffin cam” hosted by Explore.org, said Keenan Yakola, Seal Island supervisor for Audubon, who helps maintain the camera.

Environmental groups have made the case recently that Northeast Canyons and Seamounts Marine National Monument, which former President Obama designated in 2016, is important to the survival of the puffins. Fishermen have sued to overturn the creation of the monument, which they believe creates an unfair hardship in the form of fishing restrictions.

But Audubon and other environmental groups have said the monument, which creates a protected area off New England, provides birds with a reliable food source.

“Having that area that they are known to use in a protected condition is certainly a plus for the puffins,” said Peter Shelley, senior counsel with the Conservation Law Foundation.

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