EXERCISE
EXERCISE
How many apples per hundred do you find injured by the codling moth? Collect some cocoons from a pear or an apple tree in winter, place in a breeding-cage, and watch for the moths that come out. Do you ever see the woodpecker hunting for these same cocoons? Can you find cocoons that have been emptied by this bird? Estimate how many he considers a day's ration. How many apples does he thus save?
Fig. 162. Peach-Tree Borers, Male and Female
Female with broad yellow band across abdomen
Source: Agriculture for Beginners
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