Order V. Grallatores. Waders. Long neck, beak, and legs. Examples: snipe, crane, heron.
Order VI. Natatores. Divers and swimmers. Legs short, toes webbed. Examples: gull, duck, albatross.
Order VII. Columbinæ. Like Gallinæ, but with weaker legs. Examples: dove, pigeon.
Order VIII. Pici. Woodpeckers. Two toes point forward, two backward, and adaptation for climbing. Long, strong bill.
Order IX. Psittaci. Parrots, hooked beak and fleshy tongue.
Order X. Coccyges. Climbing birds, with powerful beak. Examples: kingfisher, toucan, and cuckoo.
Order XI. Macrochires. Birds having long-pointed wings, without scales on metatarsus. Examples: swift, humming bird, and goatsucker.
Mammals.—Dogs and cats, sheep and pigs, horses and cows, all of our domestic animals (and man himself) have characters of structure which cause them to be classed as mammals. They, like some other vertebrates, have lungs and warm blood. They also have a hairy covering and bear young developed to a form similar to their own,[28] and nurse them with milk secreted by glands known as the mammary glands; hence the term "mammal."
The bison, an almost extinct mammal.