Three orioles on limbs beside their nest near Jim Paul Ranch in southeastern Oregon.

Irene Finley photographing orioles near their nest on the Jim Paul Ranch in southeastern Oregon.

A great horned owl perched in its nest on a saguaro cactus.

An unidentified man photographing a great horned owl perched in its nest on a saguaro cactus.

An unidentified man with a camera on a tripod photographing a red-tailed hawk perched in a nest on a saguaro cactus.

An unidentified man with a camera on a tripod photographing a red-tailed hawk perched in a nest on a saguaro cactus.

A red-tailed hawk perched in a nest on a saguaro cactus.

Three red-tailed hawks perched in a nest on a saguaro cactus.

Three red-tailed hawks perched in a nest on a saguaro cactus.

Royal terns in flight and on the shore with eggs visible on the sand in the foreground at a colony near Aransas Pass.