Ostrich (Fig. [332])
Penguin (Fig. [330])
Pheasant (Fig. [319])
Wood Duck (Fig. [314])
Jacana (Fig. [324])
Sea Gull (Fig. [322])
Heron (Fig. [315])
Hawk (Fig. [312])
| KEY, OR TABLE, FOR CLASSIFYING BIRDS (Class Aves) INTO ORDERS | |||||
|---|---|---|---|---|---|
| Orders | |||||
| A1 Wings not suited for flight, 2 or 3 toes | Runners | ||||
| A2 Wings suited for flight (except the penguin) | |||||
| B1 Toes united by a web for swimming, legs short | |||||
| C1 Feet placed far back; wings short, tip not reaching to base of tail (Fig. [300]) | Divers | ||||
| C2 Bill flattened, horny plates under margin of upper bill (Fig. [323]) | Bill-strainers | ||||
| C3 Wings long and pointed, bill slender | Sea-fliers | ||||
| C4 All four toes webbed, bare sac under throat | Gorgers | ||||
| B2 Toes not united by web for swimming | |||||
| C1 Three front toes, neck and legs long, tibia (shin, or “drumstick”) partly bare | Waders | ||||
| C2 Three front toes, neck and legs not long | |||||
| D1 Claws short and blunt (e, Fig. [300]) | |||||
| E1 Feet and beak stout, young feathered, base of hind toe elevated | Scratchers | ||||
| E2 Feet and beak weak, young naked | Messengers | ||||
| D2 Claws long, curved and sharp, bill hooked and sharp | Robbers | ||||
| D3 Claws long, slightly curved, bill nearly straight | Perchers | ||||
| C3 Two front and two hind toes (Fig. [300]) | |||||
| D1 Bill straight, feet used for climbing | Foot-climbers | ||||
| D1 Bill hooked, both bill and feet used for climbing | Bill-climbers | ||||
The Food of Birds.—Extracts from Bulletin No. 54 (United States Dept. of Agriculture), by F. E. L. Beal.