The San Diego Zoo Safari Park recently welcomed a new addition, a Przewalski's horse foal that was the first of the critically endangered animals to be born at the park since 2014, it was announced Friday.
The Przewalski's horse was categorized as extinct in the wild until 1996. The unnamed foal, which is female and was born on Christmas Day, is one of just four newborns in North America over the past year.
"Every birth is a tremendous moment, so we are elated by this new foal," said Kristi Burtis, wildlife care director at the San Diego Zoo Safari Park. "We've had more than 157 Przewalski's horses born at the zoo and the safari park.
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"They are an important wild horse species, and this new foal, along with each individual that was born at our parks, bolsters their fragile population -- and represents our deep commitment to conserving them for future generations."
The December foal was born as part of a breeding recommendation through the Association of Zoos and Aquariums' Przewalski's horse Species Survival Plan.
According to the San Diego Zoo Wildlife Alliance, the species has survived for the past 40 years almost entirely in zoos around the world, and nearly all of the surviving horses are related to 12 Przewalski's horses born in native habitats. Ongoing reintroductions of the horses into their native habitats have established several herds in grasslands in China and Mongolia to maintain genetic variation, however, scientists believe more work needs to be done to ensure the species' future survival.
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Through a collaborative effort, science teams from the nonprofit Revive & Restore, the animal cloning company ViaGen Pets & Equine and San Diego Zoo Wildlife Alliance were able to achieve the world's first successfully cloned Przewalski's horse, Kurt, which was born in 2020.
Kurt was born to a surrogate mother — a domestic quarter horse — and is the clone of a male Przewalski's stallion whose DNA was cryopreserved 42 years ago in the Alliance's Wildlife Biodiversity Bank.
"Kurt is significant to his species because he offers the hope of bringing back lost genetic diversity to the population," said Nadine Lamberski, chief conservation and wildlife health officer for San Diego Zoo Wildlife Alliance. "It is imperative to do everything we can to save this genetic diversity before it disappears."
The colt was named Kurt in honor of Dr. Kurt Benirschke, who joined the zoo's research committee in 1970, and worked as the zoo's director of research from 1974 to 1986. Dr. Benirschke died in 2018 at the age of 94.