Publication Type: | Journal Article |
Year of Publication: | 1979 |
Authors: | Williams, JB, Batzli, GO |
Journal: | The Wilson Bulletin |
Volume: | 91 |
Issue: | 3 |
Date Published: | 1979 |
ISBN Number: | 00435643 |
Keywords: | Certhia americana, Dryobates pubescens, Melanerpes, Melanerpes carolinus, Melanerpes erythrocephalus, Mohoua novaeseelandiae, Picidae, Picoides pubescens, Sitta, Sitta carolinensis, Sitta europaea, Sittidae |
Abstract: | Red-headed Woodpeckers influenced the horizontal distribution of Red-bellied Woodpeckers by aggressively displacing them to the lowland area in winter. In the presence of Red-headed Woodpeckers in the upland, Downy Woodpeckers shifted to lower portions of the canopy and used a wider variety of tree species and limb diameters to acquire food. In the lowland where Red-headed Woodpeckers were less abundant, Downy Woodpeckers did not shift height of foraging regardless of the competitive environment. White-breasted Nuthatches and Brown Creepers also shifted along some dimensions in response to the presence of Red-headed Woodpeckers. During the breeding season interspecific interactions had less influence on foraging patterns of the guild. |
URL: | http://www.jstor.org/stable/4161241 |
Short Title: | The Wilson Bulletin |
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