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At more than 70 years young, Wisdom, the world’s oldest known banded wild bird, is taking on the challenge of motherhood again.

An egg laid by Wisdom, a Laysan albatross, late last year on a speck of land in the Pacific Ocean hatched at the beginning of last month, the U.S. Fish and Wildlife Service announced.

Biologists believe Wisdom, who was identified and banded on Midway Atoll in 1956, has hatched 30 to 36 chicks, possibly more.

Even before she became the world’s oldest known breeding bird, Wisdom defied expectations.

She has logged hundreds of thousands, if not millions of miles flying around the northern Pacific Ocean and has earned the distinction of living about twice as long as the average Laysan albatross.

“Albatrosses are extremely longlived, but the unusual thing about Wisdom is she’s so much older than other birds,” said professor Richard Phillips, a seabird ecologist and head of the higher predators and conservation group at the British Antarctic Survey.

“You wouldn’t expect a bird to be quite as much of an outlier as she is,” Phillips added, explaining that the next-oldest banded albatross he has ever come across is 61 years old, at least nine years younger than Wisdom.

Although albatrosses tend to mate for life, Wisdom’s longevity means that she has had multiple mates, Dr. Beth Flint, a biologist for the U.S. Fish and Wildlife Service, said in an online post. The father of the chick that hatched Feb. 1 is Akeakamai, Wisdom’s mate since at least 2012.

The parents will share feeding duties for the chick, providing a diet of fish eggs and squid by regurgitating the food that they forage while at sea into their offspring’s mouth. By the summer, the chick should be ready to fly for the first time, the U.S. Fish and Wildlife Service said.

The Midway Atoll National Wildlife Refuge and Battle of Midway National Memorial, found in the far northern end of the Hawaiian Islands, is home to the world’s largest colony of albatrosses and millions more sea birds.

Albatrosses return to the 2.5square-mile island each winter for nesting and mating. These sea birds typically lay at most one egg a year because the effort of incubating it, feeding it and parenting it after it hatches is so great.

— © The New York Times Co.



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