Thurber junco (Oregon snow bird) on nest. Image note: thin plate.

Thurber junco (Oregon snow bird) on nest. Image note: side view.

Thurber junco (Oregon snow bird) on nest. Image note: front view.

Thurber junco (Oregon snow bird) on nest. Image note: upright plate, thin.

Thurber junco (Oregon snow bird) feeding at a bird tray in the snow.

Snow birds and a varied thrush in the snow feeding on the back porch at Jennings Lodge.

Pyrrhuloxia sitting in nest with open mouth. Image note: 3/4 front view, large size.

Pyrrhuloxia on nest with mouth open. Image note: side view, large size, clear.

Cactus wren nest in a cholla cactus with four eggs. Entrance enlarged.

Phainopepla nest containing two eggs in the fork of a mesquite tree.