Jack Dykinga / Sunset at Yaki Point on the South Rim with stratified rim rocks and minute storm clouds inside the canyon below, Grand Canyon National Park, Arizona, USA.
01176588
Jack Dykinga / Rainbow after a storm over Mount Hayden, Point Imperial, North Rim, Grand Canyon National Park, Arizona, USA.
01040490
Mary McDonald / Broad billed hummingbird (Cynanthus latirostris) AZ, USA Madera Canyon, Arizona
01083882
HUW CORDEY / Chuckwalla lizard sunning {Sauromalus obesus} Grand Canyon, AZ, USA
01345940
Carol Walker / Arabian stallion trotting in paddock, Phoenix, Arizona, USA
01176616
Jack Dykinga / Quartermaster Canyon overlooking west into the Colorado River gorge at dawn, Grand Canyon West Hualapai Indian Reserve, Mojave Desert, Arizona, USA
01176615
Jack Dykinga / Sunrise on stratified rim rock tower at Grandview Point with meandering Colorado River riffle below, Grand Canyon National Park, Arizona, USA.
01044347
John Cancalosi / Regal horned lizard. {Phrynosoma solare} Sonoran desert, AZ, USA
01147549
John Cancalosi / Vermillion flycatcher (Pyrocephalus rubinus) perched on branch, AZ, USA
01147548
John Cancalosi / Portrait of Northern cardinal (Cardinalis cardinalis) male perched on branch, AZ, USA
01147543
John Cancalosi / Portrait of Mourning dove (Zenaida macroura), Sonoran Desert, AZ, USA
01147496
Nigel Bean / Gambel's quail (Callipepla gambelii) male, perched on Saguaro cactus, Sonoran Desert, AZ, USA
01129556
John Cancalosi / Western diamondback rattlesnake {Crotalus atrox} eating Wood rat, AZ, USA.
01124960
David Kjaer / Gambel's quail {Callipepla gambelii} pair on Saguaro cactus, Sonoran desert, AZ, USA
01129976
Barry Mansell / Gilded flicker {Colaptes chrysoides} feeding on cholla cactus, AZ, USA.
01129591
John Cancalosi / Gila woodpecker {Melanerpes uropygialis} feeding from flower, AZ, USA. Sonoran desert
01129594
John Cancalosi / Cactus wren singing {Campylorhynchus brunneicapillus} AZ, USA.
01040494
Mary McDonald / Broad billed hummingbird (Cynanthus latirostris) AZ, USA Madera Canyon, Arizona
01099863
Tom Vezo / Cactus wren {Campylorhynchus brunneicapillus} Green valley, Arizona, USA
01093863
Nigel Bean / Skull of extinct Harrington's mountain goat {Oreamnos harringtoni} AZ, USA. Late pleistocene period. Grand canyon
01093862
Nigel Bean / Preserved dung of extinct Shasta ground sloth. AZ, USA {Nothrotheriops shastensis} Rampart cave, Grand Canyon, Arizona. Late Pleistocene
01092440
Nigel Bean / Woodrat midden preserved in Grand Canyon from late Pleistocene period. Arizona, USA {Neotoma sp} over 20,000 yrs old. Seeds identified help to reconstruct past vegetation cover of continent.
01092438
Nigel Bean / Woodrat faecal pellets + Juniper seeds preserved from late Pleistocene period AZ, USA found in preserved Woodrat midden {Neotoma sp}
21035370
Mary McDonald / Bannertail Kangaroo Rat foraging filling cheek pouches (Dipodomys spectabilis) AZ USA
21099861
Tom Vezo / Cactus wren pair {Campylorhynchus brunneicapillus} AZ USA Green