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Analysis of Avian Breeding Habitats in Hudson River Tidal Marshes

机译：哈德逊河潮汐沼泽地鸟类繁殖栖息地分析

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Field studies were conducted to document patterns of habitat use by breeding birds in 6 tidal freshwater marshes along the Hudson River in New York. Twenty-two bird species were identified as probable breeders, with 10 accounting for 95% of all observations. The most numerous species were marsh wren (Cistothorus palustris), red-winged blackbird (Agelaius phoeniceus), and swamp sparrow (Melospiza georgiana). Only two non-passerines, Virginia rail (Rallus limicola) and least bittern (Ixobrychus exilis), were found to make significant use of Hudson River marshes for breeding. Avian census data were related to 13 habitat variables using univariate and multivariate statistical analyses. Significant habitat relationships were detected for most species, and suggested that two relatively distinct avian communities could be defined. Predictive models of breeding habitats for Virginia rail and least bittern were developed using multiple regression and discriminant analysis, and were recommended for testing in a second year of study.

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