June 2, 2018

by Matthew Mellinger

A burrowing owl stands guard over its burrow in Casa Grande, south of Phoenix.

June 1, 2018

by Doug Koepsel

The Colorado River flows over rocks in Marble Canyon, the eastern section of Grand Canyon National Park.

May 31, 2018

by Catherine Sienko

A bee gathers nectar from a paloverde blossom in an Arizona backyard.

May 30, 2018

by Ramon Salazar

Black-and-White Wednesday: Rays of sunlight form patterns on the walls of Upper Antelope Canyon near Page.

May 29, 2018

by Theresa Rose Ditson

A full moon looms behind one of Sedona’s striking red-rock formations.

May 28, 2018

by Bill Ferris

Vishnu Canyon, a Grand Canyon tributary, grows narrow between steep cliff walls.

May 27, 2018

by Gizle Manchester

A sandstorm begins to sweep across the iconic buttes of Monument Valley.

May 26, 2018

by Dulcey Lima

A ladder-backed woodpecker enjoys an open saguaro blossom in Sabino Canyon near Tucson.