Tim Fitzharris / Roseate Spoonbill (Platalea ajaja) wading, North America

Tim Fitzharris / Double-crested Cormorant (Phalacrocorax auritus) drying its wings, North America

Tim Fitzharris / Osprey (Pandion haliaetus) flying, North America

Michael Quinton / Great Gray Owl (Strix nebulosa) parent protecting eggs in nest, North America

Michael Quinton / Great Gray Owl (Strix nebulosa) incubating eggs on nest, North America

Tim Fitzharris / Common Garter Snake (Thamnophis sirtalis) with extended tongue, very common snake, North America

Gerry Ellis / Deer Mouse (Peromyscus maniculatus), North and Central America

Sumio Harada / Mountain Goat (Oreamnos americanus) mother and baby, Rocky Mountains, North America

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) mother returning to her 35 day old babies in nest to nurse them, Rocky Mountains, North America

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) mother nursing her 19 day old babies in nest in tree trunk, Rocky Mountains, North America

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) mother nursing her 15 day old babies in nest, Rocky Mountains, North America

Thomas Mangelsen / Sandhill Crane (Grus canadensis) trio flying, North America

Gerry Ellis / White-tailed Deer (Odocoileus virginianus) doe and fawn, North America

Sumio Harada / Red Squirrel (Tamiasciurus hudsonicus) standing on branch, Rocky Mountains, North America

Mark Moffett / Caribbean Tree Frog (Eleutherodactylus coqui) parachuting from tree, this frog holds a cup of air beneath it with its arms as if it were a parachute, leaping to the ground each morning, Puerto Rico

Michael Quinton / Trumpeter Swan (Cygnus buccinator) pair on lake, North America

Flip Nicklin / Long-spine Porcupinefish (Diodon holocanthus) in defense posture, North America

Mitsuaki Iwago / Domestic Horse (Equus caballus) running, North America

Steve Gettle / Large-flowered Trillium (Trillium grandiflorum) flower, North America

Michael Durham / Morocco Iris (Iris tingitana) and Spanish Iris (Iris xiphium) hybrid with water droplet, North America

Michael & Patricia Fogden / Red-eared Slider (Trachemys scripta elegans) immature juvenile, North America

Tim Fitzharris / Mountain Lion (Puma concolor) on ridge, North America (digital composite)

Tim Fitzharris / Mountain Lion (Puma concolor) on ridge, North America (digital composite)

Sumio Harada / Red Fox (Vulpes vulpes) juvenile, Rocky Mountains, North America

Ingrid Visser / Hooded Merganser (Lophodytes cucullatus) male, North America

Tim Fitzharris / Mexican Hat (Ratibida columnifera) flowers in bloom, North America

Tim Fitzharris / Mexican Hat (Ratibida columnifera) flowers in bloom, North America

Tim Fitzharris / Common Sunflower (Helianthus annuus) group showing symmetrical seed heads, North America

Tim Fitzharris / Wild Turkey (Meleagris gallopavo) male, North America

Tim Fitzharris / North American River Otter (Lontra canadensis) eating a fish, North America

Tim Fitzharris / White Ibis (Eudocimus albus) flock in a tree, North America

Tim Fitzharris / Ring-billed Gull (Larus delawarensis), North America

Tim Fitzharris / Red Crossbill (Loxia curvirostra) perching on branch, North America

Tim Fitzharris / Sandhill Crane (Grus canadensis) flock wading, North America

Tim Fitzharris / Mabel Orchard Spider (Leucauge venusta) on web, North America

Tim Fitzharris / Greater Prairie Chicken (Tympanuchus cupido) male in courtship dispaly, North America

Tim Fitzharris / Snowy Egret (Egretta thula) fishing, North America

Tim Fitzharris / White Ibis (Eudocimus albus) juvenile in a tree, North America

Tim Fitzharris / Roseate Spoonbill (Platalea ajaja) wading, North America

Tim Fitzharris / Common Moorhen (Gallinula chloropus) swimming, North America

Tim Fitzharris / American Painted Lady (Cynthia virginiensis) butterfly on Coneflower (Echinacea sp), New Mexico

Tim Fitzharris / American Painted Lady (Cynthia virginiensis) butterfly feeding on Rocky Mountain Bee Plant (Cleome serrulata), North America

Tim Fitzharris / Wild Horse (Equus caballus) eating grass, North America

Tim Fitzharris / Osprey (Pandion haliaetus) landing at nest, North America

Tim Fitzharris / American White Pelican (Pelecanus erythrorhynchos) group preening, North America

Tom Vezo / Western Tiger Swallowtail (Papilio rutulus) butterfly on wildflower, North America

Tom Vezo / Western Tiger Swallowtail (Papilio rutulus) butterfly on wildflower, North America

Tom Vezo / Fulvous Whistling Duck (Dendrocygna bicolor) flock flying, North America

Patricio Robles Gil / Dall's Sheep (Ovis dalli) ram portrait, North America

Tim Fitzharris / White-tailed Deer (Odocoileus virginianus) fawn with spots in forest, North America

Tim Fitzharris / Mexican Hat (Ratibida columnifera) flowers in field, North America

Tim Fitzharris / Mexican Hat (Ratibida columnifera) flowers in field, North America

Tim Fitzharris / Orange Daylily (Hemerocallis fulva) growing in meadow, North America

Tim Fitzharris / Delphinium (Delphinium staphisagria) and Mexican Hat (Ratibida columnifera) flowers in meadow, North America

Tim Fitzharris / Delphinium (Delphinium staphisagria) and Mexican Hat (Ratibida columnifera) flowers in meadow, North America

Tim Fitzharris / Delphinium (Delphinium staphisagria) and Mexican Hat (Ratibida columnifera) flowers in meadow, North America

Tim Fitzharris / Delphinium (Delphinium staphisagria) and Mexican Hat (Ratibida columnifera) flowers in meadow, North America

Tim Fitzharris / Windmill producing electricity at sunset example of renewable energy, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) doe crossing paved road

Mark Raycroft / Mule Deer (Odocoileus hemionus) or Black-tailed Deer pair on suburb lawn

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) doe drinking with fawn in river

Michael Quinton / Great Gray Owl (Strix nebulosa) pair nesting, North America

Michael Durham / Rainbow Trout (Oncorhynchus mykiss) swimming underwater, North America

Michael Durham / Rainbow Trout (Oncorhynchus mykiss) swimming underwater, North America

Tim Fitzharris / Western Bluebird (Sialia mexicana) with a beetle in its beak, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) pair flying, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) flock landing in field during migration, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) pair flying during migration, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) group flying during migration, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) flying during migration, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) flying, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) landing on lake, North America

Winfried Wisniewski / Greater Roadrunner (Geococcyx californianus) portrait, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) flying, North America

Winfried Wisniewski / Sandhill Crane (Grus canadensis) group of four walking on frozen lake, North America

Winfried Wisniewski / Little Blue Heron (Egretta caerulea) perching on submerged log in pond, North America

Mark Raycroft / Wild Turkey (Meleagris gallopavo) male standing near hen

Mitsuaki Iwago / Osprey (Pandion haliaetus) flying, North America

Mark Raycroft / White-tailed Deer (Odocoileus virginianus) spotted fawn laying in clover field, summer

Gerry Ellis / Yellowjacket (Vespinae) group guarding nest entrance, North America

Gerry Ellis / Western Hemlock (Tsuga heterophylla) in old growth temperate rainforest, North America

Gerry Ellis / Harp Seal (Phoca groenlandicus) mother nursing pup, marine eastern North America

Thomas Mangelsen / Montezuma Quail (Cyrtonyx montezumae) portrait, North America

Sumio Harada / Hoary Marmot (Marmota caligata) on ground feeding on spring vegetation, Rocky Mountains, North America

Sumio Harada / Hoary Marmot (Marmota caligata) on snowy ground, reaching paw into the air, Rocky Mountains, North America

Sumio Harada / Hoary Marmot (Marmota caligata) pair sunning on rock, Rocky Mountains, North America

Sumio Harada / Columbian Ground Squirrel (Spermophilus columbianus) pair, Rocky Mountains, North America

Sumio Harada / Columbian Ground Squirrel (Spermophilus columbianus) with nesting material in mouth, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) baby crossing stream, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) mother and baby, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) mother and baby resting on rocks, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) mother and baby resting on rocks, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) babies, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) babies playing in snow, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) babies in snow, Rocky Mountains, North America

Sumio Harada / Mountain Goat (Oreamnos americanus) pair standing in snow, Rocky Mountains, North America