John Cancalosi / Desert Cottontail (Sylvilagus auduboni) drinking from a temporary pool of water, Sonoran Desert, Arizona

Jeff Foott / Rock pinnacle, Coyote Buttes, Vermilion Cliffs National Monument, Arizona

Hiroya Minakuchi / Grand Canyon, Grand Canyon National Park, Arizona

Hiroya Minakuchi / Grand Canyon, Grand Canyon National Park, Arizona

John Cancalosi / Male Costa's Hummingbird (Calypte costae) Sonoran Desert, Arizona, USA, captive

John Cancalosi / Hedgehog Cactus (Echinocereus spp.), Sonoran Desert, Arizona, USA

John Cancalosi / Portrait of Northern cardinal (Cardinalis cardinalis) male perched on branch, AZ, USA

John Cancalosi / Portrait of Mourning dove (Zenaida macroura), Sonoran Desert, AZ, USA

Jeff Foott / Sandstone formation, Vermillion Cliffs National Monument, Arizona

Jeff Foott / Dominguez Butte, Lake Powell, Glen Canyon National Recreation Area, Arizona

Tim Fitzharris / Grand Canyon from Hopi Point, Grand Canyon National Park, Arizona

Tim Fitzharris / Bell Rock near Sedona, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) cacti at sunset, Saguaro National Park, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) cacti, Saguaro National Park, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus at sunset, Poachie Range, Arizona

Tim Fitzharris / Cliffs along Burro Creek, Arizona

Tim Fitzharris / Cholla (Opuntia sp) cacti, Poachie Range, Arizona

Jeff Foott / Rock formation, Vermilion Cliffs National Monument, Arizona

Tim Fitzharris / Saguaro (Carnegiea gigantea) cactus and moon, Arizona, digital composite

Jeff Foott / Reflections in river, Lava Rapids, Colorado River, Grand Canyon National Park, Arizona

Jeff Foott / Reflections in river, Lava Rapids, Colorado River, Grand Canyon National Park, Arizona

Jeff Foott / Colorado River, Grand Canyon National Park, Arizona

Jeff Foott / River running through sandstone cliffs, Conquistador Aisle, Colorado River, Grand Canyon National Park, Arizona