An unidentified man with a camera on a tripod photographing a red-tailed hawk perched on a saguaro cactus.

Three red-tailed hawks perched in a nest on a saguaro cactus.

Three red-tailed hawks perched in a nest on a saguaro cactus.

Three red-tailed hawks perched in a nest on a saguaro cactus.

Male and female plumbeous gnatcatcher sitting on the edge of nest. Male had food for young, female with her head turned away.

Adult cactus wren about to enter nest.

Adult cactus wren about to enter nest.

Adult cactus wren just entering entrance to nest.

Adult cactus wren about to enter nest. Image note: partially blurred.

Adult cactus wren at entrance of nest. Image note: back view, not very good.