. The Audubon annual bulletin. Birds; Birds. THK AUDUBON BULLETIN lS. Fig. 3—Oak Bullet Gall Among mammals the squirrel is known to search the vagabond gall (Fig. 0 on the cottonwood tree, presumably for its sweet contents, honey-dew, produced by the aphids who in this case are the gall makers. —Carl F. 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 Illinois Audubon Society. [Chicago, Ill. ] : The Society

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Keywords: ., bo, bookcentury1900, bookcollectionbiodiversity, booksubjectbirds