A mallard duck nest and eggs.

A glaucous gull nest with three eggs.

A downy young glaucous gull chick in the palm of an unidentified woman’s hand. Two eggs are in a nest below.

Close view of a laughing gull nest containing three eggs.

Close view of a laughing gull nest containing three eggs.

Desert sparrow nest and three eggs in sage brush.

Vermilion flycatcher nest and three eggs on limb of a mesquite tree. Image note: upright plate.

California house (linnet) finch nest with three eggs in a cholla cactus.

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

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