 | United States. Department of Agriculture - 1889 - 852 էջ
...of great interest, and considered in its economic bearings is one that should bo carefully studied. The Sparrow Hawk is almost exclusively insectivorous except when insect food is diJlicult to obtain. In localities where grasshoppers and crickets are abundant these hawks congregate,... | |
 | Albert Kenrick Fisher - 1893 - 324 էջ
...of great interest, and considered in its economic bearings is one that should be carefully studied. The Sparrow Hawk is almost exclusively insectivorous...moderate-sized flocks, and gorge themselves continuously. Barely do they touch any other form of food until, either by the advancing season or other natural... | |
 | 1893 - 320 էջ
...of great interest, and considered in its economic bearings is one that should be carefully studied. The Sparrow Hawk is almost exclusively insectivorous...moderate-sized flocks, and gorge themselves continuously. Barely do they touch any other form of food until, either by the advancing season or other natural... | |
 | Leonard Pearson, Benjamin Harry Warren - 1897 - 1114 էջ
...of great interest, and considered in its economic bearings is one that should be carefully studied. The Sparrow Hawk is almost exclusively insectivorous,...crickets are abundant these hawks congregate, often in moderate sized flocks, and gorge themselves continuously. Rarely do they touch any other form of food... | |
 | Pennsylvania. Dept. of Agriculture - 1897 - 1104 էջ
...of great Interest, and considered in its economic bearings is one that should be carefully studied. The Sparrow Hawk Is almost exclusively insectivorous,...crickets are abundant these hawks congregate, often in moderate sized flocks, and gorge themselves continuously. Rarely do they touch any other form of food... | |
 | 1898 - 262 էջ
...of great interest, and considered in its economic bearings, is one that should be carefully studied. The sparrow hawk is almost exclusively insectivorous,...moderate-sized flocks, and gorge themselves continuously. Earely do they touch any other form of food until, either by the advancing season or other natural... | |
 | Ohio Academy of Science - 1901 - 734 էջ
...minute, then change its position and hover again, and finally fly to another field when unsuccessful. "The Sparrow Hawk is almost exclusively insectivorous...crickets are abundant these hawks congregate, often in moderate sized flocks, and gorge themselves continuously. Rarely do they touch any other kind of food... | |
 | Clarence Moores Weed, Ned Dearborn - 1903 - 438 էջ
...encouragement. Dr. AK Fisher, who made a special study of its economic relations, writes that it " is almost exclusively insectivorous, except when insect...abundant, these hawks congregate, often in moderate-sized (locks, and gorge themselves continuously. Rarely do they touch any other form of food until, either... | |
 | Mabel Osgood Wright - 1907 - 566 էջ
...great interest, and, considered in its economic bearings, is one that should be carefully studied. The Sparrow Hawk is almost exclusively insectivorous,...they touch any other form of food until, either by advancing season or other natural causes, the grasshopper crop is so lessened that their hunger cannot... | |
 | Rudolph Martin Anderson - 1907 - 312 էջ
...12, other mammals; 12, reptiles or batrachians; 215, insects: 29, spiders; and 29 were empty. . . . The Sparrow Hawk is almost exclusively insectivorous, except when insect food is difficult to obtain" (Fisher, Hawks and Owls). Grasshoppers form a favorite article of diet when obtainable. Subfamily PANDIONIN^.... | |
| |
The subject of the food of this Hawk is one of great interest, and considered in its economic bearings is one that should be carefully studied. The Sparrow Hawk is almost exclusively insectivorous except when insect food is difficult to obtain. 
