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  • Rattlesnake_218x116

    Native Reptiles

    At least 21 types of snakes call the refuge home, including 6 rattlesnake species. They are an important part of the desert community.

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    Exciting Night Life

    When the sun sets and the desert cools, a host of refuge animals stir, including ringtail cats, pocket mice and 11 species of bats.

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    Cryptic Critters

    Light-colored fur helps mammals reflect heat rather than soak it in. The scales of lizards serve the same purpose.

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    Going Underground

    Many desert animals burrow, including tortoise. They burrow down (sometimes up to many feet) to avoid the summer heat and winter cold.


Protecting Fawns


Due to the success of recovery efforts, pronghorn numbers have increased to historic average numbers.

During Fawning Season

Camp Grip Well Draft CD

Camp Grip Well Draft Compatibility Determination

The refuge is seeking public comment on the Compatibility Determination to permit U.S. Border Patrol to drill a water well at their Camp Grip facilities to provide safe potable water for agents stationed at the facilities. Camp Grip is located along the El Camino del Diablo, within the Cabeza Prieta National Wildlife Refuge in Yuma County, AZ. Comments may be made in writing to Cabeza Prieta NWR, Attn: Sid Slone, Refuge Manager, 1611 N. 2nd Ave. Ajo, AZ 85321 or to The refuge will be taking public comments on this document until March 8, 2016.

Camp Grip Well Draft Compatibility Determination

About the NWRS

National Wildlife Refuge System


The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America’s fish, wildlife, and plants.

Learn more about the NWRS  

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Success: Recovering the Pronghorn


Close to being lost forever, Sonoran pronghorn are making a comeback thanks to an active management program and captive-breeding program. Learn how the U.S. Fish and Wildlife Service and its partners are applying the best available science to ensure North America’s fastest land animal remains forever at home on the range.

Sonoran Pronghorn Recovery Brochure
Page Photo Credits — All photos courtesy of USFWS unless otherwise noted., Lesser long-nosed bats / USFWS, Horned Lizard / Johnida Dockens ©, Pronghorn / Steve Hillebrand ©, Black-tailed Rattlesnake / Gary M Stoltz ©
Last Updated: Feb 26, 2016


  • Past, Present, and Future of the Sonoran Desert

    March 07, 2016 - March 10, 2016

    The Ajo Symposium will offer presentations about the natural and cultural ecology of people living in the Sonoran Desert.

    Sonoran Symposium
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