David Welling / Lone Pine Peak and Granite rock formations covered with snow at winter sunrise, Alabama Hills, Eastern Sierras, California, USA NOT AVAILABLE FOR CARDS OR CALENDARS.

David Welling / Lightning from a summer monsoon thunderstorm flashes over natural rock bridge, Bryce Canyon NP, Utah, USA, August 2010. NOT AVAILABLE FOR CARDS OR CALENDARS.

David Welling / Desert Cottontail Rabbit (Sylvilagus audubonii) drinking from a pond. Rio Grande Valley, Texas, USA, June.

David Welling / Dried grasses and red rock geological formations along the Smithsonian Butte National Scenic byway. Southern Utah, USA, July.

David Welling / Sparkling Jewelwing (Calopteryx dimidiata) female displaying while perching on a waterplant leaf. Indian Creek, Jasper County, tTexas, USA.

David Welling / A thunderstorm drops heavy rain over the hoodoo sandstone formations. Bryce Canyon National Park, Utah, USA, August.

David Welling / Utah Prairie Dog (Cynomys parvidens) standing on watch outside their burrow. Bryce Canyon National Park, Utah, USA, August.

David Welling / Whitetail Antelope Squirrel (Ammospermophilus leucurus leucurus) feeding in front of wildflowers. Joshua Tree National Park, San Bernardino County, California, USA, May.

David Welling / Brown-headed Cowbird (Molothrus ater) male perched on Cattail, Anahuac National Wildlife Refuge, Texas, USA, June

David Welling / Sharp shinned hawk {Accipiter striatus} juvenile bathing, Texas, USA

David Welling / Green tree python (Chondopython viridis) coiled on tree, captive

David Welling / Lynx in snow (Felis Lynx) captive art WWS, Califonia, USA.

David Welling / Texas tortoise {Gopherus berlandieri} Texas, USA

David Welling / Lynx portrait (Felis Lynx) WWS, Califonia, USA. Captive

David Welling / Lynx (Felis Lynx) WWS, Califonia, USA. Captive

David Welling / Common seal mother feeding 2 day pup {Phoca vitulina} La Jolla Cove, California, USA

David Welling / Red eared turtle (Pseudemys scripta elegans) USA. captive, most widely kept pet turtle

David Welling / Bull Moose {Alces alces} walking at waters edge. Yellowstone National Park, USA.

David Welling / Female Whitetail deer drinking {Odocoileus virginianus} Texas, USA

David Welling / Collared peccary, Texas, USA.

David Welling / Raccoon on dead tree stump, USA

David Welling / Rock arch in Colorado plateau. Arches NP, Utah, Turret Arch

David Welling / Sierra newt {Taricha torosa} Yosemite NP, California USA, North America

David Welling / Banana Slug on leaf, California, USA

David Welling / Yellow-backed spiny lizard (Sceloparus uniformis / magister) perches on a rock along Chalk Cliffs Road, Bishop, California United States

David Welling / Oil derricks and storage tanks in a working oil field, Southern Kern County, California, USA

David Welling / Wild turkey (Meleagris gallopova) drinks from a small pond on Laguna Seca ranch, Rio Grande Valley, South Texas, USA

David Welling / Male Summer tanager (Piranga rubra) bathes in a small pond on Laguna Seca ranch, Rio grande valley, South Texas, USA

David Welling / Long-nosed leopard lizard (Gambelia wislizeni) perches on a large rock in Redding canyon, Inyo county, California, USA

David Welling / Wild Lark Sparrow (Chondestes grammacus) drinks at the edge of a small pond on Dos Venadas Ranch, Starr county, Rio grande valley, Texas

David Welling / Great kiskadee (Pitangus sulphuratus) perches on a dead mesquite tree limb, with food in beak, Laguna Seca Ranch near Edinburgh, Texas, United States

David Welling / Male Great Basin or Desert collared lizard (Crotaphytus insularis bicinctores) sits on a rock outcrop in Redding canyon, Owens valley, Inyo county, California, United States

David Welling / Chuckwalla (Sauromalus obesus) basks on a volcanic rock near Eureka dunes, California

David Welling / Bewick's wren (Thryomanes bewickii) perched on a twig in Kern County, California, United States, March

David Welling / Bewick's wren (Thryomanes bewickii) perched on a twig in Kern county, California, United states

David Welling / Northern / Baltimore Oriole (Icterus galbula) perching, South Padre Island, Texas, USA, April.

David Welling / Black Setwing Dragonfly (Dythemis nigrescens) female perching. Travis County, Texas, USA, June.

David Welling / Bronzed Cowbird (Molothrus aeneus) male visiting a garden pond to drink and bathe. Rio Grande Valley, Texas, USA, April.

David Welling / Blue-faced Ringtail (Erpetogomphus eutania) female perching on a twig. Independence Park, Gonzales County, Texas, USA, June.

David Welling / Black-billed Cuckoo (Coccyxus erythropthalmus) perching on a tree limb. South Padre Island, Cameron County, texas, USA, April.

David Welling / Brown Anole Lizard (Anolis sagrei), an introduced species, sitting on a dead plant flashing its dew lap in a territorial display. South Padre Island, Cameron County, Texas, USA, April.

David Welling / Tourists on horseback begin the descent into Bryce Canyon. Bryce Canyon National Park, Utah, USA, August.

David Welling / Brown Anole Lizard (Anolis sagrei), an introduced species, climbing foliage. South Padre Island, Cameron County, Texas, USA, April.

David Welling / Four-striped Leaftail (Phyllogomphoides stigmatus) male eating a beetle. Rio Grande Valley, Texas, USA, June.

David Welling / Fiery Skipper (Hylephila phyleus) feeding on a Dakota Vervain (Glandularia bipinnatifida). Travis County, Texas, USA, April.

David Welling / Hoodoo formations in the high desert of Goblin Valley State Park. Utah, USA, August.

David Welling / Gray Catbird (Dumetella carolinensis) perching on a rock. South Padre Island, Cameron County, Texas, USA, April.

David Welling / Summer storm sweeps across Wotan's Throne, Brahma and Zoraster temples and other geological formations. Bright Angel Point on the north rim of Grand Canyon National Park, Arizona, USA, July.

David Welling / Greater Roadrunner (Geococcyx californianus) resting on the ground. Rio Grande Valley, Texas, USA, April.

David Welling / Greater Roadrunner (Geococcyx californianus) in profile. Rio Grande Valley, Texas, USA, April.

David Welling / Greater Roadrunner (Geococcyx californianus) stretching its wings. Rio Grande Valley, Texas, USA, April.

David Welling / Greater Roadrunner (Geococcyx californianus) portrait in habitat. Rio Grande Valley, Texas, USA, April.

David Welling / Green Parakeet (Aratinga holochlora) perching. Laredo Webb County, Texas, USA, May.

David Welling / Green Parakeet (Aratinga holochlora) perching. Laredo Webb County, Texas, USA, May.

David Welling / Mexican Ground Squirrel (Spermophilus mexicanus) female foraging for berries. Rio Grande Valley, Texas, USA, June.

David Welling / Mexican Ground Squirrel (Spermophilus mexicanus) female foraging for berries. Rio Grande Valley, Texas, USA, June.

David Welling / Mexican Ground Squirrel (Spermophilus mexicanus) by water. Rio Grande Valley, Texas USA, June.

David Welling / Mexican Ground Squirrel (Spermophilus mexicanus) female feeding on berries. Rio Grande Valley, Texas, USA, June.

David Welling / Nine-banded Armadillo (Dasypus novemcinctus) foraging at night. Starr County, Texas, USA, April.

David Welling / Portrait of a Mexican Ground Squirrel (Spermophilus mexicanus). Rio Grande Valley, Texas, USA, June.

David Welling / Northern Mockingbird (Mimus polyglottos) bathing in a pond. Lower Rio Grande Valley, Texas, USA, May.

David Welling / Northern Bobwhite (Colinus virginianus) female in profile. Lower Rio Grande Valley, Texas, USA, April.

David Welling / Queen Butterfly (Danaus gilippus) feeding on a Mistflower (Conoclinium coelestinum). Rio Grande Valley, Texas, USA, April.

David Welling / Pin-tailed Pondhawk (Erythemis plebeja) perching. Rio Grande Valley, Texas, USA, June.

David Welling / Ornate Pennant Dragonfly (Celithemis ornata) female perching. Jasper County, Texas, USA.

David Welling / Red sandstone and sand pipe formations in Kodachrome Basin State Park, Utah, USA, August.

David Welling / Rambur's Forktail Damselfly (Ischnura ramburii) female perching. Lower Rio Grande Valley, Texas, USA, November.

David Welling / San Rafael Swell, near Goblin Valley, Utah, USA, August.

David Welling / Russet-tipped Clubtail Dragonfly (Stylurus plagiatus) perching on foliage. Rio Grande Calley, Hidalgo County, Texas, USA.

David Welling / Robber Fly (Microstylum morosum) perching on a dead flower stalk. Travis County, Texas, USA, June.

David Welling / Striped Saddlebags Dragonfly (Tramea calverti) perching. Southeast Regional Park, Travis County, Texas, USA, November.

David Welling / Summer Tanager (Piranga rubra) male perching on a branch. South Padre Island, Cameron County, Texas, USA, April.

David Welling / Stream Cruiser Dragonfly (Didymops transversa) perching. Bouton Lake, Jasper County, Texas, USA, April.

David Welling / Illinois River Cruiser Dragonfly (Macromia illinoisensis) dangling from a branch. Southeast Metropolitan Park, Travis County, Texas, USA, June.

David Welling / Summer Tanager (Piranga rubra) male perching in a tree. South Padre Island, Cameron County, Texas, USA, April.

David Welling / A thunderstorm drops heavy rain over the hoodoo sandstone formations. Bryce Canyon National Park, Utah, USA, August.

David Welling / Three-striped Dasher (Micrathyria didyma) male perching on a plant stem. Santa Ana National Wildlife Refuge, Lower Rio Grande Valley, Texas, USA, June.

David Welling / Texas Indigo Snake (Drymarchon corais erebennus) looking alert by water. Santa Clara ranch, Starr County, Texas, USA, April.

David Welling / Utah Prairie Dog (Cynomys parvidens) standing in grass. Bryce Canyon National Park, Utah, USA, August.

David Welling / Texas Indigo Snake (Drymarchon corais erebennus) by water. Santa Clara ranch, Starr County, Texas, USA, April.

David Welling / Utah Prairie Dog (Cynomys parvidens) on an asphalt road. Bryce Canyon National Park, Utah, USA, August.

David Welling / Thunderstorms and clouds form over "West Temple" and "Zion" geological formations. Utah, USA, July.

David Welling / Utah Prairie Dogs (Cynomys parvidens) standing on watch outside their burrow. Bryce Canyon National Park, Utah, USA, August.

David Welling / Western Coachwhip Snake (Masticophis flagellum testaceus) in water. Rio Grande Valley, Texas, USA, May.

David Welling / Western Coachwhip Snake (Masticophis flagellum testaceus) by water. Rio Grande Valley, Texas, USA, May.

David Welling / Utah Prairie Dog (Cynomys parvidens) by the entrance to their burrow. Bryce Canyon National Park, Utah, USA, August.

David Welling / Wild Horse Butte sandstone formation. Near the entrance to Goblin Valley State Park, Utah, USA, August.

David Welling / Western Coachwhip Snake (Masticophis flagellum testaceus) by water. Rio Grande Valley, Texas, USA, May.

David Welling / Whitetail Antelope Squirrel (Ammospermophilus leucurus leucurus) feeding in front of wildflowers. Joshua Tree National Park, San Bernardino County, California, USA, May.

David Welling / Brown thrasher {Toxostoma rufum} at water, Texas, USA

David Welling / Canvasback ducks {Aythya valisineria} resting together, Alaska, USA

David Welling / Head of Russell's viper (Vipera ruselli) captive

David Welling / Cardinal (Cardinalis cardinalis) male and memale passing food between them, Rio Grande Valley, Texas, USA, June

David Welling / Painted Bunting (Passerina ciris) male perched on branch, Rio Grande Valley, Texas, USA, June

David Welling / Painted Bunting (Passerina ciris) male perched on branch, Rio Grande Valley, Texas, USA, June

David Welling / Painted Bunting (Passerina ciris) bathing in shallow water, Rio Grande Valley, Texas, USA, June