Nate Chappell/ BIA / Rufescent Tiger-Heron (Tigrisoma lineatum) with fish prey, Corrientes, Argentina

Nate Chappell/ BIA / Belding's Ground Squirrel (Spermophilus beldingi) young playing, Oregon

Nate Chappell/ BIA / Savannah Hawk (Buteogallus meridionalis) juvenile flying, Pantanal, Brazil

Nate Chappell/ BIA / Kalij Pheasant (Lophura leucomelanos) female, Thailand

Nate Chappell/ BIA / Pied Crow (Corvus albus) pair calling, Etosha National Park, Namibia

Nate Chappell/ BIA / Hoatzin (Opisthocomus hoazin) flapping, Orellano, Ecuador

Nate Chappell/ BIA / Roseate Spoonbill (Platalea ajaja) flying, Texas

Nate Chappell/ BIA / Northern Caracara (Caracara cheriway) flying, Texas

Nate Chappell/ BIA / Bokmakierie Bushshrike (Telophorus zeylonus) calling, Western Cape, South Africa

Nate Chappell/ BIA / Great Pampa-Finch (Embernagra platensis), Corrientes, Argentina

Nate Chappell/ BIA / Grassland Sparrow (Ammodramus humeralis) calling, Corrientes, Argentina

Nate Chappell/ BIA / Greater Double-collared Sunbird (Nectarinia afra), Eastern Cape, South Africa

Nate Chappell/ BIA / Tropical Mockingbird (Mimus gilvus), Asa Wright Nature Center, Trinidad and Tobago

Nate Chappell/ BIA / Merlin (Falco columbarius) female feeding on American Robin (Turdus migratorius) prey, Washington

Nate Chappell/ BIA / Sociable Weaver (Philetairus socius) carrying nesting material, Etosha National Park, Namibia

Nate Chappell/ BIA / Black-and-yellow Broadbill (Eurylaimus ochromalus), Thailand

Nate Chappell/ BIA / Yellow Armadillo (Euphractus sexcinctus) at burrow, Ibera Provincial Reserve, Argentina

Nate Chappell/ BIA / Black-throated Grosbeak (Pitylus fuliginosus) male, Atlantic Rainforest, Brazil

Nate Chappell/ BIA / Spot-billed Toucanet (Selenidera maculirostris) male, Altlantic Rainforest, Brazil

Nate Chappell/ BIA / Saffron Toucanet (Baillonius bailloni), Atlantic Rainforest, Brazil

Nate Chappell/ BIA / Green-headed Tanager (Tangara seledon), Atlantic Rainforest, Brazil

Nate Chappell/ BIA / Lesser Nighthawk (Chordeiles acutipennis) flying, Arizona

Nate Chappell/ BIA / Jaguar (Panthera onca) mother and cub on riverbank, Pantanal, Brazil

Nate Chappell/ BIA / Jacare Caiman (Caiman yacare) with water vegetation on head, Pantanal, Brazil

Nate Chappell/ BIA / Belding's Ground Squirrel (Spermophilus beldingi) young playing, Oregon

Nate Chappell/ BIA / Audubon's Oriole (Icterus graduacauda) male, Texas

Nate Chappell/ BIA / Hooded Merganser (Lophodytes cucullatus) sub-adult male, Texas

Nate Chappell/ BIA / Pallid Bat (Antrozous pallidus) flying over pond at night, Arizona

Nate Chappell/ BIA / Cape Bulbul (Pycnonotus capensis), Western Cape, South Africa

Nate Chappell/ BIA / Southern Boubou (Laniarius ferrugineus) female, Western Cape, South Africa

Nate Chappell/ BIA / Black-headed Heron (Ardea melanocephala), Western Cape, South Africa

Nate Chappell/ BIA / Chestnut-bellied Guan (Penelope ochrogaster), Mato Grosso, Brazil

Nate Chappell/ BIA / Black-backed Tanager (Tangara peruviana) male, Atlantic Rainforest, Brazil

Nate Chappell/ BIA / Whistling Heron (Syrigma sibilatrix) flying, Mato Grosso, Brazil

Nate Chappell/ BIA / Jabiru Stork (Jabiru mycteria) eating fish prey, Pantanal, Brazil

Nate Chappell/ BIA / Bontebok (Damaliscus pygargus) male, Western Cape, South Africa

Nate Chappell/ BIA / Southern Double-collared Sunbird (Cinnyris chalybeus) male calling, Eastern Cape, South Africa

Nate Chappell/ BIA / White-necked Raven (Corvus albicollis), Western Cape, South Africa

Nate Chappell/ BIA / Knysna Turaco (Tauraco corythaix), Western Cape, South Africa

Nate Chappell/ BIA / Common Waxbill (Estrilda astrild), Western Cape, South Africa

Nate Chappell/ BIA / Cape Weaver (Ploceus capensis) male, Eastern Cape, South Africa

Nate Chappell/ BIA / African Fish Eagle (Haliaeetus vocifer) carrying nesting material, Chobe National Park, Botswana

Nate Chappell/ BIA / Chestnut-breasted Coronet (Boissonneaua matthewsii) hummingbirds feeding on flower nectar, Napo, Ecuador

Nate Chappell/ BIA / Galapagos Petrel (Pterodroma phaeopygia) flying over ocean, Galapagos Islands, Ecuador

Nate Chappell/ BIA / Blond-crested Woodpecker (Celeus flavescens) male, Sao Paulo, Brazil

Nate Chappell/ BIA / Vinous-breasted Starling (Sturnus burmannicus), Surat Thani, Thailand

Nate Chappell/ BIA / Black Skimmer (Rynchops niger) pair mating, Texas

Nate Chappell/ BIA / Black Skimmer (Rynchops niger) skimming, Mustang Island State Park, Texas