Pileated woodpecker, illustration
Woodspecker skull with hyoid, illustration
Head of a northern flicker (Colaptes auratus)
Giant salamander, 19th century illustration
Green woodpecker birds, artwork
House sparrow, illustration
Male superb lyre bird, illustration
Giant panda, illustration
Whiskered and natterer's bats, illustration
Mouse anatomy, illustration
Peregrine falcon, illustration
Hoopoe, illustration
Treecreeper (Certhia familiaris), illustration
Dodo, illustration
Seagull, illustration
Bohemian waxwing, illustration
Biological classification, illustration
Male house sparrow, illustration
Female house sparrow, illustration
Yellow-legged gull, illustration
Black-headed gull, illustration
Greenfinch in flight, illustration
Wallcreeper bird, artwork
Eagle attacking a parrot, illustration
Bobcat skull, illustration
Dog heart, illustration
Dog liver, illustration
Dog lymphatic system, illustration
Head of a whimbrel (Numenius phaeopus)
Head of a red-tailed hawk (Buteo jamaicensis)
Head of a hooded merganser (Lophodytes cucullatus)
Head of a northern cardinal (Cardinalis cardinalis)
Head of a roseate spoonbill (Ajaia ajaja)
Head of a brown pelican (Pelecanus occidentalis)
Woodpecker, 19th Century illustration
Elephant, illustration
Horse anatomy, illustration
Fallow deer, illustration
Muntjac deer, illustration
Mouse male reproductive system, illustration
Removing offal from plucked bird, illustration
Spanish psammodromus, illustration
Blue jay, illustration
Robin (Erithacus rubecula), illustration
Seagull in flight, illustration
Seagull wing, illustration
American flamingo, illustration
Black-winged stilt, illustration
Common redshank, illustration
Little egret, illustration
Grey heron, illustration
Jackdaw, 19th Century illustration
Pheasant, 19th Century illustration
Hummingbird, 19th Century illustration
Ortolan, 19th Century illustration
Dove, 19th Century illustration
Tanager, 19th Century illustration
Hummingbirds, 19th Century illustration
Francolin, 19th Century illustration
Short-toed treecreeper, 19th Century illustration
Yellow-billed oxpecker, 19th Century illustration
Northern bald ibis, 19th Century illustration
Golden-headed manakin, 19th Century illustration
Hazel grouse, 19th Century illustration
Turtle dove, 19th Century illustration
Blue wood pigeon, 19th Century illustration
Madagascan blue pigeon, 19th Century illustration
Balicassiao (Dicrurus balicassius), 19th C illustration
Green pigeon, 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
Chicken anatomy, 19th Century illustration
Long-tailed tits on hawthorn blossom, illustration
Owl feathers, illustration
Red Crowned Crane, artwork
Sultan Tit, artwork
Silver eared mesia bird, artwork
Snipe, illustration
Five birds, illustration
Cuckoo in nest, illustration
Birds, ciconiiformes family, illustration
Gruiformes birds, illustration
Blue tit, illustration
Dove carrying branch, illustration
Snake, 18th century artwork
Dog skeleton, illustration
Head of a great blue heron (Ardea herodias)
Bobwhite
Bat, historical artwork
Goldfinch
Evening grosbeak
Axis deer, illustration
Barasingha deer, illustration
Dog skin, illustration
Pere David's deer, illustration
Green lizard anatomy, 19th Century illustration
Frog, illustration
Pig, illustration
Dolphin, illustration
Tiger, illustration
Guanlong in habitat, illustration
Elephant skeleton, illustration
Equine skeletal system, illustration
Tick life-cycle, illustration
Three-toed sloth, illustration
Green vine snake, illustration
Horse musculature, illustration
Large psammodromus, illustration
Common genet, illustration
Pond slider, illustration
European badger, illustration
Otter eating brown trout, illustration
Salamander, 19th Century illustration
Greater siren, 19th Century illustration
Sex determination of newborn mice, illustration
Dog spleen, illustration
Dog arteries, illustration
Dog veins, illustration
Bobcat, illustration
Tawny Fish Owl, artwork
Two woodpigeons, artwork
Pair of Spermophila birds, artwork
Two blue bird-of-paradise birds, artwork
Pallid Swift, artwork
European robin, artwork
Australian estrildid finches, artwork