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Title: Breeding bird response to cattle grazing of a cottonwood bottomland: Journal: Journal of Wildlife Management; Authors: J. A. Sedgwick, and F. L. Knopf; Date: 1987; Summary: Sedgwick and Knopf found that breeding densities of the migratory birds, in the study area, were not influenced by a seasonal, short-duration cattle (Bos taurus) grazing system. Sedgwick and Knopf note that birds dependent on overstory coverage may be influenced by the long-term effects of grazing on seedling survival and overstory tree species regeneration, since even moderate grazing can alter overstory composition, density, and demography. Avian productivity may also be reduced by the effects of grazing, even though avian densities in the short-term are seemingly unaf ...; Agrovoc Control Words: Riparian zones, Rangelands, Wildlife; View more details about this article