Woodpeckers frequently excavate a new hole annually, leaving the previous gap for other cavity-nesting birds. Cactus spines discourage animals from climbing the cactus. Evidently, having said that, they don’t discourage snakes. I’ve observed photographs of a gopher snake climbing a saguaro to prey about the dwellers inside of a gap. https://cactussaguaroforsale17395.like-blogs.com/34734934/the-definitive-guide-to-swarrow-cactus-for-sale