 | Nebraska. State Board of Agriculture - 1899 - 412 pages
...round numbers 75,000,000 birds in Nebraska, there would be required 1,875,000,000 insects for each days rations. Again, estimating the number of insects required...of insects to feed our birds for a single day, or 937,500 bushels for 60 days or 2,343,750 bushels for 150 days. These estimates are very low when we... | |
 | 1901 - 936 pages
...insects a day as an average diet for each individual bird, and estimating that we have about I 1-2 birds to the acre, or in round numbers, 75,000,000...of insects to feed our birds for a single day, or 937,500 bushels for 60 days, or 2,343,750 bushels for 150 days. These estimates are low when we take... | |
 | Henry Philemon Attwater - 1902 - 20 pages
...the number of insects required to fill a bushel is 120,000, consequently it would take about 35,500 bushels of insects to feed our birds for a single day, or 1,065,000 bushels for thirty days. These estimates are very low, when w« take into consideration the... | |
 | Nebraska. State Entomologist - 1909 - 200 pages
...aquatic birds."1 In nearly every case where the food habits of our birds have been carefully studied, do we find that the good done far exceeds the possible...of insects to feed our birds for a single day, or 937,500 bushels for 60 days, or 2,343,750 bushels for 150 days. These estimates are very low when we... | |
 | John Hall Sage, Louis Bennett Bishop - 1913 - 382 pages
...of weeds. " In nearly every case where the food habits of our birds have been carefully studied, do we find that the good done far exceeds the possible...of insects to feed our birds for a single day, or 937,500 bushels for 60 days, or 2,343,750 bushels for 150 days." (Bruner, Special Bulletin, University... | |
 | Gilbert Haven Trafton - 1916 - 426 pages
...day as an average diet for each individual bird, and estimating that we have about one and one half birds to the acre, or in round numbers 75,000,000...of insects to feed our birds for a single day, or 937,500 bushels for 60 days, or 2,343,750 bushels for 150 days. Another Nebraska naturalist has estimated... | |
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In nearly every case where the food habits of our birds have been carefully studied, do we find that the good done far exceeds the possible harm that might be inflicted by our birds. Allowing twenty-five insects per day as an average diet for each individual... 