How did that happen?

One of the fun things about being out in nature is finding new and interesting things you may not have seen before.  This image is a perfect example!  How did a cactus wind up on a branch high above the ground?  It’s growing, it’s healthy and it’s at least 15 feet away from its normal home.  Any ideas?

Up a tree! (Courtesy Paula Richards, Jan 2014)
Up a tree!
(Courtesy Paula Richards, Jan 2014)