The Crow in Its Relation to Agriculture is It a Farm Pest
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88 9. 68 1. 78 7. 04 1. 57 6. 22 I o 2. 61 3. 95 11. 91 4. 58 SUMMARY OF FOOD HABITS.
The crow's consumption of insects presents the strongest argu- ment in the bird's favor. About a fifth of its diet is secured from the insect world, and among the pests it destroys are some of the most troublesome with which the farmer has to contend. Many of the insects it eats are taken early in spring, when their life cycles are at the lowest ebb and when their destruction results in the greatest good.
Cons...picuous among such food items are May beetles and their de- structive larvae, white grubs, of which the crow is an effective enemy. In its consumption of grasshoppers the crow probably renders man its greatest individual service, and in regions where these insects are 14 Farmers' Bulletin 1102.
abundant their nymphs form the principal insect food of the nest- lings. Other creatures in the destruction of which the young exceed the adults include caterpillars and spiders. The latter, however, are predacious and to a great extent beneficial.
What to read after The Crow in Its Relation to Agriculture is It a Farm Pest?
You can find similar books in the "Read Also" column, or choose other free books by E R Edwin Richard Kalmbach to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
88 9. 68 1. 78 7. 04 1. 57 6. 22 I o 2. 61 3. 95 11. 91 4. 58 SUMMARY OF FOOD HABITS.
The crow's consumption of insects presents the strongest argu- ment in the bird's favor. About a fifth of its diet is secured from the insect world, and among the pests it destroys are some of the most troublesome with which the farmer has to contend. Many of the insects it eats are taken early in spring, when their life cycles are at the lowest ebb and when their destruction results in the greatest good.
Cons...picuous among such food items are May beetles and their de- structive larvae, white grubs, of which the crow is an effective enemy. In its consumption of grasshoppers the crow probably renders man its greatest individual service, and in regions where these insects are 14 Farmers' Bulletin 1102.
abundant their nymphs form the principal insect food of the nest- lings. Other creatures in the destruction of which the young exceed the adults include caterpillars and spiders. The latter, however, are predacious and to a great extent beneficial.
What to read after The Crow in Its Relation to Agriculture is It a Farm Pest?
You can find similar books in the "Read Also" column, or choose other free books by E R Edwin Richard Kalmbach to read onlineMoreLess
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