In the 1960s, the Española giant tortoise population had dwindled to just 15 individuals, 12 females and 3 males, due to overexploitation and habitat destruction. To prevent extinction, a breeding program was initiated in 1976, and Diego, a male tortoise residing at the San Diego Zoo, was identified as a suitable candidate. He was brought back to the Galápagos Islands to participate in the program.
Diego proved to be remarkably prolific, fathering over 800 offspring, which accounts for approximately 40% of the current population of his species on Española Island. His efforts have been instrumental in increasing the population to over 2,000 individuals, allowing for the cessation of the breeding program in 2020. Diego was subsequently retired and returned to his native habitat on Española Island.
Today, Diego continues to thrive in his natural environment, monitored via GPS to track his movements and ensure his well-being. His remarkable contribution serves as a testament to the impact that dedicated conservation efforts can have on preserving endangered species.
