Identifier: birdsmary00sylv (find matches)
Title: Birds of a Maryland farm : a local study of economic ornithology
Year: 1902 (1900s)
Authors: Sylvester D. Judd
Subjects: Birds--Maryland Beneficial birds--Maryland.
Publisher: Washington : U.S. Dept. of Agriculture, Division of Biological Survey
Contributing Library: University of Florida, George A. Smathers Libraries
Digitizing Sponsor: University of Florida, George A. Smathers Libraries with support from LYRASIS and the Sloan Foundation

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sp., Lucilia <■;<*(//■ and other Muscidse), bugs(Capsidee), May-flies, and snails. The vertebrae of some small fish,which may have been taken to aid the gizzard in digesting the food.were also found in the stomachs. Bank Swallow.—An examination was made of the stomachs of 83young bank swallows collected a few miles above Marshall Hall from FOOD OF NESTLINGS. 17 a colony in the face of the river bluff. They were probably the prog-eny of the -wallow- that frequently circled over the farm. The foodof* the nestlings and that of adults collected during the nesting seasoni- shown in diagrams (PI. IX. fig. 2). Purple martin-, which came from a colony of somewhat more thana dozen pairs nesting in boxes on pole- at Bryans Point, a mile abovethe house, were often seen circling about the farm. On June 28, L902,1 visited the colony and found the parent birds feeding the young -I-dier bugs, ant-, fig-eaters (AllorJwna nitida), and dragon-flies (Zibelliclaand Agrionidse). -—i
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4»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

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