ONE OF NORTH AMERICA’S TINIEST MAMMALS JUST GOT A THIRD NEW POPULATION.
More than 500 pocket mice have been released over 20 years. North San Mateo is now the third reintroduced population.
A 20-year conservation programme has established a third reintroduced population of endangered Pacific pocket mice at North San Mateo on Marine Corps Base Camp Pendleton. The thumb-sized animal was once thought extinct; more than 500 mice have now been released into new and existing populations.
WHAT HAPPENED
San Diego Zoo Wildlife Alliance announced the milestone on October 6. The first reintroduced population was established at Laguna Coast Wilderness Park in 2016 and the second at Camp Pendleton in 2024. The North San Mateo population is the third created through the programme. The work combines conservation breeding, genetically informed releases, habitat restoration and long-term monitoring with the U.S. Fish and Wildlife Service, California Department of Fish and Wildlife, U.S. Geological Survey and the Marine Corps.
WHY THIS IS HOPESLOP
The scale is the point: a mammal that weighs about as much as three pennies still needed two decades of coordinated science to earn more room to exist. Pocket mice also punch above their weight. Their burrows improve water movement and nutrient cycling in soil and create shelter for other animals. This is not species recovery declared complete; it is a third deliberately rebuilt foothold.
ORIGINAL SOURCESan Diego Zoo Wildlife AllianceRead the original report
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