A Determination of the Economic Status of the Western Meadow Lark Sturnella Neg
A Determination of the Economic Status of the Western Meadow Lark Sturnella Neg
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Thus we might naturally expect that birds collected early in the morning would have taken a larger percentage of cutworms than birds collected later in the day. Stomach examination has substantiated this as a fact. The kinds of crops raised in any particular locality must also influence the kinds of food taken, for it changes their avail- ability. For instance, the stomachs of several meadowlarks con- tained Egyptian corn and milo maize. Where this crop is raised to any extent the meadowlark do...ubtless occasionally turns its attention to this type of grain. In other localities where only oats and barley are grown these grains are the only ones available. VI. PERCENTAGES OF FOOD OF MEADOWLARKS TAKEN IN ALFALFA FIELDS IN THE VICINITY OF HANFORD, CALIFORNIA Miscellaneous 1 potato-bug 1 potato-bug, 1 bee 1 potato-bug 1 fly, 3 ants 10 ants 1 fly 1 pupa 17 small flies 1 ant 1 cricket, 2 ant-lions 16. 1 Number Per cent Animal matter Vegetable matter cut- worms cut- worms Number beetles Per cent beetles 1 100 3 50 4 15 2 96 4 2 30 7 46 3 100 25 80 9 20 4 98 2 1 6 5 100 5 65 2 12 6 96 4 19 76 6 20 7 100 9 60 7 20 8 88 12 23 75 4 10 9 85 15 1 10 7 75 10 94 6 21 83 2 8 11 100 2 80 2 20 12 100 I 16 10 76 13 100 4 55 6 20 14 100 4 85 3 15 15 17 83 2 10 1 4 16 100 8 60 5 14 Totals and averages 92.
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To quickly assess the difficulty of the text, read a short excerpt:
Thus we might naturally expect that birds collected early in the morning would have taken a larger percentage of cutworms than birds collected later in the day. Stomach examination has substantiated this as a fact. The kinds of crops raised in any particular locality must also influence the kinds of food taken, for it changes their avail- ability. For instance, the stomachs of several meadowlarks con- tained Egyptian corn and milo maize. Where this crop is raised to any extent the meadowlark do...ubtless occasionally turns its attention to this type of grain. In other localities where only oats and barley are grown these grains are the only ones available. VI. PERCENTAGES OF FOOD OF MEADOWLARKS TAKEN IN ALFALFA FIELDS IN THE VICINITY OF HANFORD, CALIFORNIA Miscellaneous 1 potato-bug 1 potato-bug, 1 bee 1 potato-bug 1 fly, 3 ants 10 ants 1 fly 1 pupa 17 small flies 1 ant 1 cricket, 2 ant-lions 16. 1 Number Per cent Animal matter Vegetable matter cut- worms cut- worms Number beetles Per cent beetles 1 100 3 50 4 15 2 96 4 2 30 7 46 3 100 25 80 9 20 4 98 2 1 6 5 100 5 65 2 12 6 96 4 19 76 6 20 7 100 9 60 7 20 8 88 12 23 75 4 10 9 85 15 1 10 7 75 10 94 6 21 83 2 8 11 100 2 80 2 20 12 100 I 16 10 76 13 100 4 55 6 20 14 100 4 85 3 15 15 17 83 2 10 1 4 16 100 8 60 5 14 Totals and averages 92.
What to read after A Determination of the Economic Status of the Western Meadow Lark Sturnella Neg?
You can find similar books in the "Read Also" column, or choose other free books by H C Harold Child Bryant to read onlineMoreLess
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