. Birds of a Maryland farm : a local study of economic ornithology . »f Pig. 16.—Barn swallow. Three young downy woodpecker- which were collected May 28,1896, had fed principally on ants, but had also eaten spider-, groundbeetles, and caterpillars. Catbird. The difference between the food of adults and youngbelonging to a highly frugivorous species is well illustrated in thecase of the catbird, and is shown in diagrams (PI. IX. fig. 3), whichwere made principally from results obtained at Marshall Hall. Crow and Crow Blackbird. Such granivorous birds as crow- andcrow blackbirds feed their young
. Birds of a Maryland farm : a local study of economic ornithology . »f Pig. 16.—Barn swallow. Three young downy woodpecker- which were collected May 28,1896, had fed principally on ants, but had also eaten spider-, groundbeetles, and caterpillars. Catbird. The difference between the food of adults and youngbelonging to a highly frugivorous species is well illustrated in thecase of the catbird, and is shown in diagrams (PI. IX. fig. 3), whichwere made principally from results obtained at Marshall Hall. Crow and Crow Blackbird. Such granivorous birds as crow- andcrow blackbirds feed their young mainly insect-. Sufficient material 18 BIRDS OF A MARYLAND FARM. to illustrate this habit was not available at Marshall Hall, but thediagrams here given (figs. 17 and L8), based on results obtainedelsewhere,0 will serve to show it. By the time the young are readyto leave the nest, however, they are fed to a large extent on eithergrain or fruit, according to locality. In tin4 Middle West they takegrain and in the East generally fruit. Both crows and crow black-. 7 DAYS OR LESS
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbirdsma, bookyear1902
