Beginners' zoology . Fig. 299. — Position ofLimbs of Pigeon. i6o BEGINNERS ZOOLOGY Flying. — When studying the quill feathers of the wing,you saw that the wider side of the vane is beneath thefeather next behind it. During the downward stroke ofthe wing this side of the vane is pressed by the air against. Fig. 300. a, clambering foot of chimney sweep; i, climbing foot of woodpecker: e, perching foot ofthrush; ti, seizing foot of hawk; e, scratching foot of pheasant; /, stalking foot of king-fisher; g-, running foot of ostrich; A, wading foot of heron; i, paddling foot of gull;/t, swimming foot
Beginners' zoology . Fig. 299. — Position ofLimbs of Pigeon. i6o BEGINNERS ZOOLOGY Flying. — When studying the quill feathers of the wing,you saw that the wider side of the vane is beneath thefeather next behind it. During the downward stroke ofthe wing this side of the vane is pressed by the air against. Fig. 300. a, clambering foot of chimney sweep; i, climbing foot of woodpecker: e, perching foot ofthrush; ti, seizing foot of hawk; e, scratching foot of pheasant; /, stalking foot of king-fisher; g-, running foot of ostrich; A, wading foot of heron; i, paddling foot of gull;/t, swimming foot of duck; /, steering foot of cormorant; w, diving foot of grebe; », skim-ming foot of coot. Question: Does any bird use its foot as a hand? (F\g. 320.) the feather above it and the air cannot pass through thewing. As the wing is raised the vanes separate andthe air passes through. The convex upper surface ofthe wing also prevents the wing from catching air asit is raised. Spread a wing and blow strongly against BIRDS i6i
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1921
