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    Author(s): Richard M. DeGraaf; Aelred D. Geis; Patricia A. Healy
    Date: 1991
    Source: Landscape and Urban Planning. 21: 181-188.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (993.0 KB)

    Description

    Breeding bird populations in six habitats in Columbia. MD. were studied to develop procedures suitable for measuring bird use of residential areas and to identify habitat characteristics that define the distribution of various common bird species. A procedure to measure bird use based on 4-min transect counts on plots measuring 91 m × 91 m proved better than point counts. Transect counts reduced many of the problems associated with counting birds in urban areas, such as varying noise and visibility. Eighty percent of observations were recorded in the first 4 min. Habitat measurement procedures were examined also. It was found that a subsample of woody tree and shrub crown volumes made on 0.2 ha was highly correlated with similar measures made on 0.8-ha plots.

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    Citation

    DeGraaf, Richard M.; Geis, Aelred D.; Healy, Patricia A. 1991. Bird population and habitat surveys in urban areas. Landscape and Urban Planning. 21: 181-188.

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