Agustin Esmoris / Plovercrest (Stephanoxis lalandi) hummingbird feeding on flower nectar, Argentina

Agustin Esmoris / Surucua Trogon (Trogon surrucura), Misiones, Argentina

Agustin Esmoris / Southern Lapwing (Vanellus chilensis), Misiones, Argentina

Agustin Esmoris / Toco Toucan (Ramphastos toco) feeding on fruit, Argentina

Agustin Esmoris / Chocolate-vented Tyrant (Neoxolmis rufiventris), Argentina

Agustin Esmoris / Chocolate-vented Tyrant (Neoxolmis rufiventris), Argentina

Agustin Esmoris / American Oystercatcher (Haematopus palliatus) female tending eggs in nest, Argentina

Agustin Esmoris / Cream-backed Woodpecker (Campephilus leucopogon) in nest cavity, Argentina

Agustin Esmoris / Black Howler Monkey (Alouatta caraya) in cage, Argentina

Agustin Esmoris / Peregrine Falcon (Falco peregrinus) flying, Argentina

Agustin Esmoris / Peregrine Falcon (Falco peregrinus) flying, Argentina

Agustin Esmoris / Short-billed Pipit (Anthus furcatus), Argentina

Agustin Esmoris / White-tufted Grebe (Rollandia rolland), Argentina

Agustin Esmoris / Blue-eyed Cormorant (Phalacrocorax atriceps), Black-browed Albatross (Thalassarche melanophrys), and Southern Rockhopper Penguin (Eudyptes chrysocome) colony, Falkland Islands

Agustin Esmoris / Southern Rockhopper Penguin (Eudyptes chrysocome) on nest, Falkland Islands

Agustin Esmoris / Southern Rockhopper Penguin (Eudyptes chrysocome), Falkland Islands

Agustin Esmoris / Southern Rockhopper Penguin (Eudyptes chrysocome) colony, Falkland Islands

Agustin Esmoris / Plovercrest (Stephanoxis lalandi) hummingbird feeding on flower nectar, Argentina

Agustin Esmoris / Southern Lapwing (Vanellus chilensis) at nest, Misiones, Argentina

Agustin Esmoris / Tropical Kingbird (Tyrannus melancholicus), Misiones, Argentina

Agustin Esmoris / Pauraque (Nyctidromus albicollis) at night, Misiones, Argentina

Agustin Esmoris / Argentine Toad (Chaunus arenarum) jumping at night, Buenos Aires, Argentina

Agustin Esmoris / Carpenter Bee (Xylocopa augusti) entering nest in tree, Buenos Aires, Argentina

Agustin Esmoris / Burrowing Parrot (Cyanoliseus patagonus) pair at burrow entrance, Buenos Aires, Argentina

Agustin Esmoris / Burrowing Parrot (Cyanoliseus patagonus) pair preening at burrow entrance, Buenos Aires, Argentina

Agustin Esmoris / Burrowing Parrot (Cyanoliseus patagonus), Buenos Aires, Argentina

Agustin Esmoris / Burrowing Parrot (Cyanoliseus patagonus) at burrow entrance, Buenos Aires, Argentina

Agustin Esmoris / Chalk-browed Mockingbird (Mimus saturninus), Buenos Aires, Argentina

Agustin Esmoris / Hooded Siskin (Carduelis magellanica) juvenile feeding on London Rocket (Sisymbrium irio) fruit, Buenos Aires, Argentina

Agustin Esmoris / Brown Cacholote (Pseudoseisura lophotes), Buenos Aires, Argentina

Agustin Esmoris / Rufous-collared Sparrow (Zonotrichia capensis), Buenos Aires, Argentina

Agustin Esmoris / Picazuro Pigeon (Patagioenas picazuro), Buenos Aires, Argentina

Agustin Esmoris / Picazuro Pigeon (Patagioenas picazuro), Buenos Aires, Argentina

Agustin Esmoris / Long-tailed Meadowlark (Sturnella loyca), Buenos Aires, Argentina

Agustin Esmoris / Spot-winged Pigeon (Columba maculosa), Buenos Aires, Argentina

Agustin Esmoris / Plumbeous Rail (Pardirallus sanguinolentus) in marsh, Buenos Aires, Argentina

Agustin Esmoris / Many-colored Rush Tyrant (Tachuris rubrigastra), Buenos Aires, Argentina

Agustin Esmoris / Cinereous Harrier (Circus cinereus) male carrying bird prey, Buenos Aires, Argentina

Agustin Esmoris / Cinereous Harrier (Circus cinereus) male carrying bird prey, Buenos Aires, Argentina

Agustin Esmoris / Pied-billed Grebe (Podilymbus podiceps), Buenos Aires, Argentina

Agustin Esmoris / Red Shoveler (Anas platalea) female, Buenos Aires, Argentina

Agustin Esmoris / American Wigeon (Anas americana) on shore, Montreal, Quebec, Canada

Agustin Esmoris / Common Raven (Corvus corax), Banff National Park, Alberta, Canada

Agustin Esmoris / American Bison (Bison bison) pair grazing near lake, Alberta, Canada

Agustin Esmoris / Roseate Spoonbill (Platalea ajaja) balancing, Buenos Aires, Argentina

Agustin Esmoris / Roseate Spoonbill (Platalea ajaja) preening, Buenos Aires, Argentina

Agustin Esmoris / Blue-crowned Parakeet (Aratinga acuticaudata), Buenos Aires, Argentina

Agustin Esmoris / Southern Lapwing (Vanellus chilensis), Buenos Aires, Argentina