Short-eared owl, illustration
Group of Owls, artwork
Dusky eagle owl, artwork
Northern Eagle-Owl, artwork
Tawny Fish Owl, artwork
Eagle-owl, illustration
Great-horned owl, artwork
Snowy owl, illustration
Long eared owl, artwork
Snowy owls, artwork
Owl feathers, illustration
Greenfinch in flight, illustration
Bohemian waxwing, illustration
Australian estrildid finches, artwork
Buzzard in flight
Tawny owl, illustration
Great grey owl, artwork
Northern hawk-owl, artwork
Tengmalm's owl, artwork
Barred owl and prey, artwork
Northern saw-whet owl, artwork
Owl skeleton, illustration
Gyrfalcon pair, artwork
Biological classification, illustration
Robin (Erithacus rubecula), illustration
European robin, artwork
Peregrine falcon, illustration
Eagle attacking a parrot, illustration
Silver eared mesia bird, artwork
Male Eurasian bullfinch, artwork
Short-toed treecreeper, 19th Century illustration
Male superb lyre bird, illustration
Blue tit, illustration
Barn owls, artwork
Estrildid finches, artwork
Galapagos short-eared owl, 19th century
Finch, 19th Century illustration
Finch, 1849 illustration
Finches and Tanagers, artwork
Red-breasted Merganser ducks, artwork
Group of birds, artwork
Group of song birds, artwork
Bullfinch perched on a blossoming branch, illustration
Purple finches, artwork
Hermit Thrush, artwork
Greater scaup, artwork
White-winged scoter, artwork
Canada goose,, artwork
Goosander, artwork
Common goldeneye, artwork
Bohemian waxwing,, artwork
Sage thrasher and varied thrush, artwork
Eastern bluebird
Yellow-legged gull, illustration
American flamingo, illustration
Black-winged stilt, illustration
Common redshank, illustration
Little egret, illustration
Grey heron, illustration
Black-headed gull, illustration
Hoopoe, illustration
Treecreeper (Certhia familiaris), illustration
Yellow-billed oxpecker, 19th Century illustration
Northern bald ibis, 19th Century illustration
Jackdaw, 19th Century illustration
Pheasant, 19th Century illustration
Golden-headed manakin, 19th Century illustration
Hazel grouse, 19th Century illustration
Turtle dove, 19th Century illustration
Hummingbird, 19th Century illustration
Blue wood pigeon, 19th Century illustration
Madagascan blue pigeon, 19th Century illustration
Balicassiao (Dicrurus balicassius), 19th C illustration
Ortolan, 19th Century illustration
Green pigeon, 19th Century illustration
Dove, 19th Century illustration
Red hazel grouse, 19th Century illustration
Bird of paradise, 19th Century illustration
Birds of Senegal, 19th Century illustration
Collared sunbird, 19th Century illustration
Perdrix perdrix, 19th Century illustration
White-crowned pigeon, 19th Century illustration
Tanager, 19th Century illustration
Hummingbirds, 19th Century illustration
Francolin, 19th Century illustration
Dodo, illustration
Blue jay, illustration
Red Crowned Crane, artwork
Two woodpigeons, artwork
Sultan Tit, artwork
Pair of Spermophila birds, artwork
Two blue bird-of-paradise birds, artwork
Snipe, illustration
Chicken anatomy, 19th Century illustration
Cuckoo in nest, illustration
Male house sparrow, illustration
House sparrow, illustration
Female house sparrow, illustration
Long-tailed tits on hawthorn blossom, illustration
Seagull, illustration
Seagull in flight, illustration
Seagull wing, illustration
Bird skeleton, historical artwork
Wallcreeper bird, artwork
Pallid Swift, artwork
Owl, historical artwork
Sea eagle, historical artwork
Rough-legged Buzzards, artwork
Californian condor, artwork
Adult male condor, 19th century illustration.
Adult female condor, 19th century illustration.
California condor, 19th century illustration
Griffon vulture, 19th century illustration
Cooper's hawk observing prey, artwork
Red-tailed hawks and prey, artwork
Pair of red-shouldered hawks, artwork
Northern goshawk and Cooper's hawk
Black-winged kite, artwork
Sharp-shinned hawk, artwork
Harris hawk,, artwork
White-tailed eagle, historical artwork
Head of a bird, illustration
Head of a red-tailed hawk (Buteo jamaicensis)
Cooper's hawk
Short-toed eagle, artwork
African Estrildid finches, artwork
Harlequin ducks, artwork
Snow goose, artwork
Brent goose, artwork
Bird eye, anatomical illustration
Egg anatomy, illustration
Two turkey vultures, artwork
Collared dove, illustration
Bird of prey, historical artwork
静けさの中で
Birds, ciconiiformes family, illustration
Gruiformes birds, illustration
Forest floor and fauna, illustration
Brambling and bunting, historical artwork
Raven, illustration
Passenger pigeon, artwork
European robin
Black-billed cuckoos, artwork
Barnacle goose,, artwork
Owls, illustration
North American kestrel with prey, illustration
Kite skeleton, illustration
Secretary bird, 19th Century illustration
Kestrel hanging in air, illustration
Birds flying high, illustration
Bird-of-prey hunting, 19th century
Bald Eagle, artwork
Peregrine falcons, artwork
Red-shouldered hawk and prey, artwork
Osprey, artwork
Common nighthawk, artwork
Hen harriers, artwork
Merlin, historical artwork
Haast's eagle, artwork
Osprey
Canada goose
Gaston's bird, illustration
Bird flu research, artwork
Herring gull, historical artwork
Owl Parrot, artwork
Wildcats, illustration
Tiger, illustration
Galapagos barn owl, 19th century
Human skeleton, historical artwork
Short-billed dowitcher, artwork
Andean condors, artwork
Five birds, illustration