Helping Mojave Desert Tortoises Survive in a Rapidly Changing World

Want to unwind for a bit during your next summer visit to the San Diego Zoo or the San Diego Zoo Safari Park? Explore these immersive opportunities to relax in nature.

Check out the cold, hard facts about reptiles and temperature sex determination.

SAN DIEGO, PALM DESERT, Calif. (April 15, 2024) – Seventy critically endangered Mojave desert tortoises have successfully emerged from their winter burrows after being reintroduced into their native habitat on Edwards Air Force Base in Southern California. San Diego Zoo Wildlife Alliance and The Living Desert Zoo and Gardens, the global authority on desert plant and wildlife conservation, are working in partnership with Edwards Air Force Base, the U.S. Fish and Wildlife Service and the U.S. Geological Survey, using headstarting techniques designed to increase the survival rate for young tortoises. The cohort of young tortoises was the first in the program to be reintroduced into the wild after receiving a combination of an indoor- and outdoor-rearing. Within 24 hours of reentering their native habitat, the tortoises were exhibiting positive natural behaviors by constructing new burrows or modifying existing burrows for shelter. Now, six months later, they have emerged after winter brumation—a state of deep sleep specific to reptiles—and are spending more time basking at burrow entrances. Scientists are currently conducting health assessments and replacing radio transmitters on the tortoises to continue monitoring their success and better understand the juvenile age class.

SAN DIEGO (Feb. 14, 2024) – It's a match! In the world of conservation, pairing a perfect couple is more than just a romantic endeavor; it could be the key to saving an endangered species. San Diego Zoo Wildlife Alliance (SDZWA) is playing Cupid for the critically endangered ‘alalā, a unique bird found only in Hawai‘i. In a new, unconventional study recently published in the journal Animal Conservation, SDZWA scientists hoping to hone their matchmaking skills applied personality traits to these crow relatives to find love connections to result in successfully fertilized eggs.

African penguins and California least terns share marine habitat challenges.

Andean bear twins at the San Diego Zoo are a double dose of hope for this vulnerable species.

Take a closer look at how we're rebuilding sustainable populations of critically endangered wildlife in the Pacific.

SAN DIEGO (March 14, 2023) – The San Diego Zoo continues to celebrate the arrival of twin Andean bear cubs—now 3 months old and venturing out of their private den into the guest-facing habitat. The cubs were born in December 2022 to second-time mother Alba, and sire Turbo. Since the twins’ birth, wildlife care specialists have been closely observing the bears via a closed-circuit video camera and an audio “baby monitor,” allowing Alba to care for her youngsters without interruption until they were ready to leave the den.