Two royal tern chicks in the sand.

A close view of royal tern eggs in the sand.

A royal tern chick in the sand.

Close view of a laughing gull nest containing three eggs.

Close view of a laughing gull nest containing three eggs.

Western grebe nest with bird in the background. Image note: telephoto lens.

Female phainopepla on branch beside nest. Two young birds begging after being fed.

Male phainopepla sitting at the back of nest, young birds begging to be fed.

Female phainopepla with berry in mouth at back of nest. Two young birds begging to be fed.

Desert sparrow nest and three eggs in sage brush.