. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Bird Study 37 THE FORM AND USE OF BEAKS Teacher's Story INCE the bird uses its arms and hands for flying, it has been obliged to develop other organs to take their place, and of their work the beak does its full share. It is well to emphasize this point by letting the children at recess play the game of trying to eat an apple or to put up their books and pencils with their arms tied behind them; such an experiment will show how naturally the teeth and feet come to the aid when the han
. Handbook of nature-study for teachers and parents, based on the Cornell nature-study leaflets. Nature study. Bird Study 37 THE FORM AND USE OF BEAKS Teacher's Story INCE the bird uses its arms and hands for flying, it has been obliged to develop other organs to take their place, and of their work the beak does its full share. It is well to emphasize this point by letting the children at recess play the game of trying to eat an apple or to put up their books and pencils with their arms tied behind them; such an experiment will show how naturally the teeth and feet come to the aid when the hands are useless. The hen feeds upon seeds and insects which she finds on or in the ground; her beak is homy and sharp and acts not only as a pair of nip- pers, but also as a pick as she strikes it into the soil to get the seed or insect, having already made bare the place by scratching away the grass or surface of the soil with her strong, stubby toes. The hen does not have any teeth, nor does she need any, for her sharp beak enables her to seize her food; and she does not need to chew it, since her gizzard does this for her after the food is swallowed. The duck's bill is broad, flat, and much softer than the hen's beak. The duck feeds upon water insects and plants; it attains these by thrust- ing its head down into the water, seizing the food and holding it fast while the water is strained out through the sieve at the edges of the beak; for this use, a wide, flat beak is necessary. It would be quite as impossible for a duck to pick up hard seeds with its broad, soft bill as it would for the hen to get the duck's food out of the water with her narrow, horny bill. Both the duck and hen use their bills for cleaning and oiling their feathers and for fighting also; the hen strikes a sharp blow with her beak making a wound like a dagger, while the duck seizes the enemy and simply pinches hard. Both fowls also use their beaks for turning over the eggs when incubating, and also as an a
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