Cactus wren nest showing four eggs. Nest is partially torn away from cactus.

Palmer thrasher nest and three eggs in a cholla cactus.

Meadowlark nest and eggs in the grass.

A sage thrasher nest with three eggs.

A barn swallow perched on a post. Image note: side view.

A barn swallow perched on a post. Image note: side view.

A barn swallow at the edge of nest with eggs showing.

A barn swallow at the edge of nest with eggs showing.

A barn swallow on its nest.

A barn swallow at the edge of nest with eggs showing.