HABITAT USE BY MIGRATORY BIRDS AT A DISTURBED SITE |
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| Authors: | Peter H Yaukey |
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| Institution: | Department of Geography , University of New Orleans , New Orleans, Louisiana 70148 |
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| Abstract: | Migratory and resident birds were censused, and their habitat use quantified, during three fall migration seasons in Georgia, USA. The suburban study site was a large cemetery with patches of lawn and shade trees, deciduous brush, mature hardwood forest, and an open pine grove. The frequency of use of different cover types, perch heights, and perch substrates was measured for five resident and four migrant species. All of the migrants used narrower subsets of the available habitats than most or all of the resident species. Three migrants also used habitats that were relatively unused by other species at the site. The frequency of use of different patches of vegetation was measured for seven residents and five migrants. Four of the migrants used narrow subsets of the available patches that were used relatively infrequently by other species at the site. Although three of the migrants heavily used a cover type (deciduous brush) that might be available at most stop-over sites, the red-eyed vireo heavily used ornamental magnolia trees which are probably unavailable at most sites. The narrow habitat and patch use of migrants might reflect reduced intraspecific competition because of the small numbers of each species using the site simultaneously. Key words: bird ecology, foraging behavior, habitat, migrant birds, resident birds, Georgia.] |
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| Keywords: | riparian vegetation disturbance fire flood regeneration Sespe Wilderness CA |
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