 | United States. Department of Agriculture - 1889 - 858 էջ
...and gorge themselves continuously. Rarely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and otner forms of life contribute... | |
 | United States. Department of Agriculture - 1889 - 852 էջ
...and gorge themselves continuously. Rarely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | 1889 - 860 էջ
...and gorge themselves continuously. Rarely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | U.S. department of agriculture Commissioner's OFfice - 1889 - 842 էջ
...and gorge themselves continuously. Rarely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | Albert Kenrick Fisher - 1893 - 324 էջ
...and gorge themselves continuously. Barely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | 1893 - 320 էջ
...and gorge themselves continuously. Barely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | 1895 - 656 էջ
...advancing season or other natural muses, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds...and other forms of life contribute to their fare. Beetles, spiders, mice, shrews, small snakes, lizards, or even birds may be required to bring up the... | |
 | 1898 - 262 էջ
...and gorge themselves continuously. Earely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | Theodore Sherman Palmer - 1900 - 108 էջ
...and gorge themselves continuously. Rarely do they touch any other form of food until, either by the advancing season or other natural causes, the grasshopper crop is so lessened that their hunger can not be appeased without undue exertion. Then other kinds of insects and other forms of life contribute... | |
 | Ohio Academy of Science - 1901 - 734 էջ
...causes, the grasshopper crop is so lessened that they can no longer appease their hunger except by undue exertion. Then other kinds of insects and other...spiders, mice, shrews, small snakes, lizards or even small birds are required to bring up the balance." (Fisher.) It therefore seems certain that the farmer... | |
| |
... is almost exclusively insectivorous except when insect food is difficult to obtain. In localities where grasshoppers and crickets are abundant these hawks congregate, often in moderate-sized flocks, and gorge themselves continuously. Rarely do they... 
