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Several holes were excavated in this saguaro.
Rocky hills at Gates Pass.
Gila woodpeckers like the interior of the Saguaro Cactus because it is the only plant it can hollow out for their nest in the desert. The woodpecker will drill 2 to 3 holes before it decides to live in one. It will peck right into the soft tissue that is used to store water. The cactus will fix the damage by sealing up the inside with "callous scar tissue" and that stops water loss. Both the gilded flicker and Gila woodpecker excavate nest cavities inside the saguaro’s pulpy flesh. When a woodpecker abandons a cavity, elf owls, screech owls, purple martins, finches and sparrows may
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