Verdin

This is a new bird for me, so I hope I got the identification right!
 We have a friend from CO visiting us here in AZ, so we went to the Desert Botanical Garden to see the blooming wild flowers, one of her favorite things. It was quite a display, and I took lots of pictures. We also saw the butterflies (more pictures), and did the Sonoran Desert walk.
But of course I was captivated by this little bird building a nest in one of the cacti. Notice the careful placement of its little feet!