Species library

Olive Rockfish

Acanthoclinus fuscus

A master of the New Zealand shoreline, the Olive Rockfish is an eel-like survivor that can breathe air and guard its ...

Fish

Olive-sided Flycatcher

Contopus cooperi

A champion of the high canopy, the Olive-sided Flycatcher is famous for its dapper 'vested' plumage and its ringing f...

Birds

Olive Sparrow

Arremonops rufivirgatus

A secretive resident of the southern brushlands, the Olive Sparrow is a splash of subtle color in the thickets. Known...

Birds

Olive-throated Parakeet

Eupsittula nana

A social and spirited resident of the tropical lowlands, the Olive-throated Parakeet is known for its earthy olive pl...

Birds

Olympic Marmot

Marmota olympus

The charismatic mascot of Washington's high peaks, the Olympic Marmot is a social, whistling wonder found nowhere els...

Mammals

Onager

Equus hemionus

The Onager is the desert's endurance athlete, a wild and hardy equid that thrives in the vast steppes of Asia. Known ...

Mammals

One-spotted Stink Bug

Euschistus variolarius

A common but often overlooked resident of North American gardens, the One-spotted Stink Bug is a marvel of natural ca...

Insects

Opaleye

Girella nigricans

Boasting brilliant sapphire eyes and a calm, grazing nature, the Opaleye is the 'underwater goat' of the California c...

Fish

Orange-bellied Euphonia

Euphonia xanthogaster

A tiny, vibrant spark of the tropical canopy, the Orange-bellied Euphonia is famous for its stunning citrus-colored p...

Birds

Orange-billed Sparrow

Arremon aurantiirostris

Meet the dapper ground-dweller of the tropics. With its neon-orange beak and striking tuxedo-like head stripes, the O...

Birds

Orange-chinned Parakeet

Brotogeris jugularis

Meet the vibrant and chatty socialite of the Neotropical suburbs. With its brilliant green plumage and a hidden flash...

Birds

Orange-crowned Warbler

Leiothlypis celata

A master of movement in the garden thicket, the Orange-crowned Warbler is a subtle beauty for the patient observer. T...

Birds

Orange-eared Tanager

Chlorochrysa calliparaea

A shimmering emerald gem of the Andes, the Orange-eared Tanager brings a flash of brilliant color to the misty cloud ...

Birds

Orange-fronted Parakeet

Eupsittula canicularis

A social and vibrant inhabitant of Central America's Pacific slope, the Orange-fronted Parakeet is easily recognized ...

Birds

Orange Ladybird

Halyzia sedecimguttata

A luminous garden ally that trades aphids for fungi, the Orange Ladybird is a master of the night. Easily recognized ...

Insects

Orange River Francolin

Scleroptila gutturalis

A social and vocal ground bird of the African savanna, the Orange River Francolin is easily identified by its strikin...

Birds

Orange Sallow

Tiliacea citrago

With its vibrant golden-orange wings, the Orange Sallow is a true jewel of the autumn night. This moth is a master of...

Insects

Orange Skipperling

Oarisma aurantiaca

A tiny, golden gem of the grasslands, the Orange Skipperling is a master of low-altitude flight. Though small, its vi...

Insects

orange-tip

Anthocharis cardamines

A signature sign of spring, the orange-tip brings a splash of vibrant color to garden hedgerows. With its unique 'mos...

Insects

Orange-winged Amazon

Amazona amazonica

A vibrant icon of the South American canopy, the Orange-winged Amazon is a social, intelligent parrot known for its b...

Birds

Orangemouth Corvina

Cynoscion xanthulus

A champion of the Gulf's estuaries, the Orangemouth Corvina is a shimmering predator famous for its golden-hued mouth...

Fish

Orangespotted Filefish

Cantherhines pullus

A master of disguise with a vibrant personality, the Orangespotted Filefish is a gem of the Atlantic reefs. Recogniza...

Fish

Orca

Orcinus orca

The undisputed masters of the sea, Orcas combine immense power with complex social intelligence. These iconic black-a...

Mammals

Orchard Oriole

Icterus spurius

Often overlooked in favor of their brighter orange cousins, the Orchard Oriole is a hidden gem of the bird world. Its...

Birds

Orchard Swallowtail

Papilio aegeus

Australia's largest common butterfly, the Orchard Swallowtail, is a spectacular garden visitor known for its bold bla...

Insects

Orchid Dottyback

Pseudochromis fridmani

A neon-purple jewel of the Red Sea, the Orchid Dottyback is a tiny but bold explorer of the reef's hidden shadows. It...

Fish

Orchid Tit

Hypolycaena othona

A gem of the tropical garden, the Orchid Tit is a master of disguise with delicate tails and striking orange-banded w...

Insects

Oregon Spotted Frog

Rana pretiosa

Meet the Pacific Northwest's most dedicated water-dweller. With its striking red belly and upward-gazing eyes, the Or...

Amphibians

Organ-pipe Mud-dauber Wasp

Trypoxylon politum

The master architect of the backyard, this elegant black wasp constructs sophisticated clay nurseries that look like ...

Insects

Oribi

Ourebia ourebi

A master of the open plains, the Oribi is a graceful, small-statured antelope known for its distinctive whistle and i...

Mammals

Oriental Cuckoo

Cuculus optatus

A phantom of the forest canopy, the Oriental Cuckoo is famous for its haunting double-note call and its clever, paras...

Birds

Oriental Honey-buzzard

Pernis ptilorhynchus

Meet the armored specialist of the sky. The Oriental Honey-buzzard is a unique raptor that trades the chase for a tac...

Birds

Oriental Plover

Anarhynchus veredus

Meet the elegant globetrotter of the grasslands. With its slender legs and striking breast bands, the Oriental Plover...

Birds

Oriental Rat Snake

Ptyas mucosa

The Oriental Rat Snake is a fast-moving, non-venomous marvel of the backyard. Known for its incredible agility and ro...

Reptiles

Oriental Reed Warbler

Acrocephalus orientalis

A bold and boisterous songster of the wetlands, the Oriental Reed Warbler is the soundtrack of the East Asian summer....

Birds

Oriental Whipsnake

Ahaetulla prasina

The master of arboreal disguise, the Oriental Whipsnake is a slender, emerald-green marvel of the Asian canopy. Known...

Reptiles