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Ken Stenek / Coastal Observation and Seabird Survey Team
Hundreds of dead seabirds have been found washed ashore on sites from islands in the Bering Sea to villages north of the Bering Strait, signs of another large die-off in the warmed-up waters of the North Pacific Ocean.
The dead birds are mostly northern fulmars and short-tailed shearwaters, species that migrate long distances to spend summers in waters off Alaska and other northern regions, the U.S. Fish and Wildlife Service reported. Also in the mix are some kittiwakes, murres and auklets, the federal agency said.
The cause is being investigated. Necropsies so far show that the birds are emaciated — with no food in their stomachs or intestines and little or no fat on their bodies.
“Right now, we know that they are starving to death and can’t hold their heads above water, and they’re drowning,” said Ken Stenek, a teacher in Shishmaref and volunteer in a program that monitors seabirds.
The precise toll is unclear. Fish and Wildlife said in its bulletin about 800 dead birds had been found since early August, but surveys are continuing and the known toll appears to be mounting — and experts caution that birds washing ashore represent only a small fraction of the dead.
Of this latest wave, the first were found on the Pribilof Islands in the Bering, the Fish and Wildlife Service said. Since then, dead birds have washed ashore on Bering beaches and as far north as the Inupiat villages Shismaref and Deering on the Chukchi Sea mainland coastline.
The new die-off follows a massive loss of common murres in 2015 and 2016, the biggest murre die-off on record in Alaska, and precursor to near-total reproductive failures for murres in the Gulf of Alaska and Bering.
It also follows the deaths of hundred of puffins found last fall on St. Paul Island in the Pribilofs and, prior to that, mass deaths of murres and auklets along the U.S. West Coast. In each death wave, starving birds have left emaciated carcasses, and each wave has been associated with unusually warm marine waters.
The Bering event is the latest in an “unprecedented series of marine bird die-offs” over the last four years in waters from California to the Arctic, said Julia Parrish, executive director of the Coastal Observation and Seabird Survey Team, or COASST, managed by the University of Washington.
It indicates that the pattern is moving north, said Parrish, a professor at the UW’s School of Aquatic and Fishery Sciences.
“This just seems like the next chapter in the story,” she said.
This is the fourth consecutive year when the Bering has been “exceedingly warm,” said Rick Thoman, climate science and services manager for the National Weather Service in Alaska.
This year, early spring ice melt allowed open waters to begin absorbing heat early, Thoman said. “You had much longer for the water to get warmer this year,” he said.
Courtesy of adn.com
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