Lucy warbler nest and three eggs in bark of a mesquite tree.

Lucy warbler nest in bark of a mesquite tree. No eggs showing.

Palmer thrasher just leaving nest in cholla cactus. Image note: shadow on body.

View of a pelican’s nest with eggs and one chick just hatched.

View of a pelican’s nest with three eggs.

A killdeer nest with four eggs. Image note: negative broken and repaired.

Two young western grebes and two eggs in nest.

Western grebe nest floating. Long way of plate.

Western grebe nest and eggs. Image note: upright plate.

Kingbird nest and four eggs in the fork of a tree.