Mockingbird built a nest in my cholla cactus. I kept watching for several days and walking casually by so she got used to me. Then after they hatched I waited until she was off the next, got as close to the cactus as I could and then held the camera out and over the next and took a variety of shots without seeing anything. Then I carefully tried to back out. I only got a couple of usable shots, this being one of them. I also got a bunch of stickers in my arms and a peck on the head from angry mamma as I made my way back out!