. Birds of California : an introduction to more than three hundred common birds of the state and adjacent islands, with a supplementary list of rare migrants, accidental visitants, and hypothetical subspecies . Birds. 532 LAND BIRDS nest with food averaged ten minutes apart. The longest period of fasting was twenty-three minutes, and the short- est one and one-half minutes. Usually one can tell what food a nestling has swallowed by looking closely at its distended crop, as the contents are visible through the nearly transparent skin. But these young Tanagers were twenty feet from the ground in
. Birds of California : an introduction to more than three hundred common birds of the state and adjacent islands, with a supplementary list of rare migrants, accidental visitants, and hypothetical subspecies . Birds. 532 LAND BIRDS nest with food averaged ten minutes apart. The longest period of fasting was twenty-three minutes, and the short- est one and one-half minutes. Usually one can tell what food a nestling has swallowed by looking closely at its distended crop, as the contents are visible through the nearly transparent skin. But these young Tanagers were twenty feet from the ground in a slender fir, and I could not examine them ; consequently I could judge of the menu only by the foraging of the adult, and by what I saw sticking out of his bill. When he darted out into the air and back again in fly- catcher fashion, I knew he was after a small insect. When he came from the bushes with a bunch on either side of his beak, I was sure he had picked up a caterpillar; when wings of gauzy texture projected on one side of the mandibles and a long black body on the other, I made a Yankee guess that a dragon- fly had been captured for breakfast. As soon as the nestlings were able to fly they came down to the cover of the lower brush and fed in com- pany with their parents. We knew this by the anxiety of the adults and by their efforts to lead us away from. Louisiana Tanaoer. '* A dragonfiy had been cap- tured for oreakfast.^^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wheelock, Irene Grosvenor; Horsfall, R. Bruce (Robert Bruce), 1869-1948. Chicago : A. C. McClurg
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1912
