Helping Mojave Desert Tortoises Survive in a Rapidly Changing World

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.

Challenges are lurking in the watery world of black caimans—and their reptilian relatives.

SAN DIEGO (July 13, 2023) – After more than two years of dedicated work, San Diego Zoo Wildlife Alliance conservationists are achieving success breeding a critically endangered coastal bird: the milky stork. This breeding program is part of an 11th-hour effort with the Association of Zoos and Aquariums Taxon Advisory Group (AZA TAG) to assist the last remaining individuals of the species living in North America—helping them successfully reproduce, and bolster the world’s population of milky storks. 

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

SAN DIEGO (Oct. 3, 2022) – For more than two decades, conservationists from San Diego Wildlife Alliance have been waiting with anticipation as they watched for the slightest signs of breeding from a rare reptile species. This summer, their patience paid off after wildlife care team members at the San Diego Zoo welcomed 41 tiny Indian narrow-headed softshell turtle hatchlings—becoming the first accredited conservation organization in North America to hatch these endangered turtles, and furthering the organization’s ongoing work to save this vital Asian species.

SAN DIEGO and PALM DESERT, CALIF. (Sept. 30, 2022) – As a changing climate impacts wildlife around the globe, one keystone species in the Southwest United States serves as a prime example of the dangers of rising temperatures and habitat loss.