Pileated woodpecker, illustration
Green woodpecker birds, artwork
Red-Cockaded woodpecker, artwork
Woodpecker, 19th Century illustration
Ivory-billed woodpecker, artwork
Woodpeckers, artwork
Red-headed woodpeckers, artwork
Northern flicker birds, artwork
Three ivory-billed woodpeckers, artwork
Black-backed woodpeckers, artwork
Forest floor and fauna, illustration
Woodspecker skull with hyoid, illustration
White-headed woodpeckers
Black-throated trogon, illustration
Channel-billed toucan, illustration
Parrots, 19th Century illustration
Jamaica bird, 19th Century illustration
Bullfinch perched on a blossoming branch, illustration
How the Leopard got his Spots, illustration
The Cat that Walked by Himself, illustration
Great spotted woodpecker, artwork
Pink footed Goose beak, artwork
Pink footed Goose, artwork
Penguin heads, artwork
Red-winged parrot, illustration
Varied lorikeet, illustration
Turquoise parrot, illustration
Gouldian finch, illustration
Flamingo, conceptual illustration
Southern brown kiwi, illustration
King bird-of-paradise, 19th century illustration
Head of long-snouted spinner dolphin, illustration
Brown creeper and Pygmy nuthatch, artwork
Prothonotary warblers, artwork
Two mourning doves, artwork
Bewick's wren, artwork
Purple martins and nest, artwork
Carolina parakeets, artwork
Tufted titmouse, artwork
Orchard orioles, artwork
Cedar Waxwings, artwork
Summer tanagers, artwork
Chuck-will's widow birds, artwork
Pair of red-shouldered hawks, artwork
Loggerhead Shrikes, artwork
White-eyed vireo, artwork
Rose-breasted grosbeaks, artwork
Pine warbler, artwork
White-breasted nuthatch, artwork
Grey kingbird, artwork
Olive-sided flycatcher, artwork
Pine Siskin, artwork
Common ground dove, artwork
Wood duck, artwork
Brown pelican, artwork
Lesser yellowlegs, artwork
Pine grosbeak birds, artwork
Toucan, illustration
Sparrow speciation, illustration
Kingfisher and young, illustration
Tawny owl, illustration
Tree sparrow (Passer montanus), illustration
Pied wagtail on stone, illustration
Jacana walking over floating vegetation, illustration
Ostrich accelerating from walk to run, illustration
Coal tit perched on branch, illustration
Eagle-owl, illustration
Parakeet, 19th Century illustration
Brazil bird, 19th Century illustration
How the Rhinoceros got his Skin, illustration
Aegyptopithecus prehistoric primate, illustration
Kinkajou, 19th Century illustration
Gibbons hanging from a tree, illustration
Green tree frog on a branch, illustration
Head of a northern flicker (Colaptes auratus)
Treecreeper (Certhia familiaris), illustration
Prairie hen, 19th century artwork
Barn swallow, artwork
Marsh wren, artwork
Two Night Parrots, artwork
Owl skeleton, illustration
Chimpanzee, illustration
Head of grey whale with mouth open, illustration
Head of blue whale with mouth open, illustration
Extinct birds, illustration
Wilson's bird-of-paradise, 19th century illustration
Rufous treepie bird, artwork
Two common grackles, artwork
Three Baltimore orioles, artwork
Blue-winged warblers, artwork
Common yellowthroat, artwork
Blue-headed Vireos, artwork
Black-billed cuckoos, artwork
Worm-eating warblers, artwork
Yellow warbler, artwork
Kentucky warblers, artwork
American redstarts, artwork
Ruby throated hummingbird, artwork
Cerulean warblers, artwork
Two bobolinks, artwork
Carbonated warblers, artwork
Swamp sparrow, artwork
Henslow's sparrow, artwork
Eastern Kingbirds, artwork
American Robins, artwork
Blackburnian warbler, artwork
Eastern meadowlark, artwork
Ovenbirds, artwork
Palm warbler, artwork
Yellow-rumped warbler, artwork
Rusty Blackbird, artwork
Northern cardinal birds, artwork
Veery bird, artwork
Fork-tailed flycatcher, artwork
Mangrove Cuckoo, artwork
White-crowned pigeon, artwork
House wren, artwork
Golden-crowned kinglet, artwork
Black-throated mango hummingbird, artwork
Great grey shrike, artwork
Boreal chickadee, artwork
Ruby-crowned kinglet, artwork
Swainson's warbler, artwork
Mallards, artwork
Green heron, artwork
Western and Scarlet Tanagers, artwork
Seaside sparrow, artwork
White-winged crossbill, artwork
Sage thrasher and varied thrush, artwork
Common redpoll, artwork
Rufous hummingbird,, artwork
Dickcissel, artwork
Bluebirds and Warbler, artwork
Sparrows and bunting, artwork
Warblers, artwork
Silky anteaters, illustration
Raven, illustration
Kingfisher, illustration
Feather, illustration
Henodus aquatic reptile head, illustration
South African penguin, illustration
Kite skeleton, illustration
Biological classification, illustration
Finch, 1849 illustration
Machetes pugnax, 1849 illustration
Helmeted guineafowl, illustration
Red-legged partridge, illustration
Western tragopan, illustration
Conflicto prehistoric birds, illustration
Great frigatebird, illustration
Snail kite, illustration
Blue tit, illustration
Birds flying high, illustration
Pied wagtail, illustration
Cassowary, 19th Century illustration
Sunbittern, 19th Century illustration
Ostrich, 19th Century illustration
Flycatcher, 19th Century illustration
Sparrows, 19th Century illustration
Ptarmigan, 19th Century illustration
Finch, 19th Century illustration
Swift, 19th Century illustration
Screamer, 19th Century illustration
Hoopoe, 19th Century illustration
Mating dances of cranes, illustration
Turtle dove in flight, illustration
Shoebill, 19th century illustration
Huias, artwork
Schegel's francolin, artwork
Little grebe, historical artwork
Storm petrel, historical artwork
Ruff, historical artwork
Sandpiper, historical artwork
North American kestrel with prey, illustration
Xanthorus aurantius, 19th C illustration
Crowned crane, 19th Century illustration
Great bustard, 19th Century illustration
Sandhill crane, 19th Century illustration
Spruce grouse, 19th Century illustration
Barred warbler, 19th Century illustration
Great curassow, 19th Century illustration
Dalmatian pelican, 19th Century illustration
Great argus, 19th Century illustration
Pied avocet, 19th Century illustration
Secretary bird, 19th Century illustration
Rainbow lorikeets, 19th century illustration
Bird eggs in nest hatching, illustration
Common ostriches, 19th century illustration