SAN DIEGO (Dec. 7, 2023) – In 2017, a team of medical experts—including specialists in the treatment of both human and wildlife patients—gathered to assess an esteemed elder resident of the San Diego Zoo Safari Park: Winston, a critically endangered silverback gorilla. Today, at age 51, he is considered one of the world's oldest male gorillas in managed care.

SAN DIEGO (Dec. 6, 2023) – The Endangered Species Act turns 50 years old this year. A new report released by the Endangered Species Coalition, Ten Stories of Hope: The Endangered Species Act at 50, highlights 10 case studies of conservationists using different strategies to protect and recover imperiled fish, birds, plants and mammals in the United States. Ninety-nine percent of species protected under the Endangered Species Act have been saved from extinction, including the humpback whale, grizzly bear and bald eagle. The Top Ten report features the Stephens’ kangaroo rat and the efforts of San Diego Zoo Wildlife Alliance to help recover the species using conservation translocation.

SAN DIEGO (Nov. 27, 2023) – When a mysterious illness called “sea star wasting syndrome” decimated 95% of the sunflower sea star population, and some 20 other sea star species along the Pacific Coast from Baja to Alaska in 2013, scientists rallied to understand the factors that caused such a massive wasting event. Now as part of the greater recovery initiative, in a scientific first, dozens of baby sunflower sea stars were hatched and are thriving thanks to a breakthrough in reproductive cell cryopreservation technology.

It takes a team and some careful observation to keep the San Diego Zoo's colony of 25 black-and-white African penguins in the pink.

SAN DIEGO (Nov. 14, 2023) – San Diego Zoo Wildlife Alliance, in collaboration with Omaha’s Henry Doorly Zoo and Aquarium, reintroduced more than 70 endangered mountain yellow-legged frogs into a lake located in the San Bernardino Mountains. This release marks the first time the Southern California distinct population segment of the mountain yellow-legged frog has been reintroduced into a lake instead of a mountain stream. The frogs were bred at San Diego Zoo Wildlife Alliance’s Beckman Center for Conservation Research between 2020 and 2022, and then reared at Omaha’s Henry Doorly Zoo and Aquarium. The cross-country effort to save this California frog is part of a robust conservation breeding and reintroduction research program aimed at restoring populations of this declining species throughout its historic range.

SAN DIEGO (Nov. 9, 2023) – A binational team of scientists, using creativity and innovation, adorned dozens of endangered thick-billed parrots with tiny solar-powered satellite transmitters to track and reveal their winter migratory nesting sites in the remote treetops of the Sierra Madre Occidental ranges. Their research reveals new critical habitat, 80% of which has no formal protection.

Biodiversity banking is a critical component of conservation, and the need for it is more urgent than ever. 

LOS ANGELES, SAN DIEGO, and PORTLAND, Ore. (Oct. 16, 2023) – The U.S. Fish & Wildlife Service (Service) is sharing early results from the historic vaccine trial for highly pathogenic avian influenza (HPAI) in California condors (Gymnogyps californianus). As reported by the Service’s Incident Command leading the effort, results from the first test group showed that 60% of the condors produced measurable antibodies that are expected to provide partial protection against mortality from HPAI if the birds are exposed. 

For western lowland gorilla Winston, the best way to lead is from the heart.

SAN DIEGO (Sept. 7, 2023) – The world’s second successfully cloned Przewalski’s horse is thriving at his home at the San Diego Zoo Safari Park. The foal, born Feb. 17, 2023, and his surrogate mother, a domestic quarter horse, were recently moved from his birthplace at ViaGen Pets & Equine cloning facility in Texas so he can learn the language of being a wild horse from his own species.