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North American Breeding Bird Survey Annual Summary, 1988

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North American Breeding Bird Survey Annual Summary, 1988; 1989; Federal Government Series; 89(13); Droege, S.;Sauer, J.R.

Summary

Introduction: The North American Breeding Bird Survey (BBS) is run by approximately 2,000 skilled amateur ornithologists, and is coordinated cooperatively by the U.S. Fish and Wildlife Service and the Canadian Wildlife Service. Beginning in 1966, BBS cooperators have been collecting standardized information on North American bird populations. The BBS is a roadside survey, comprised of permanent routes that are surveyed yearly. Each route is 39.4 km (24.5 miles) long and consists of 50 stops spaced 0.8 km (0.5 mile) apart. All birds heard or seen during a 3-min observation period at each stop are recorded, and the sum of the individual stops for each species is used as an index of species density on the route. In this report, we present [...]

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Type Scheme Key
local-index unknown 5230281
local-pk unknown 5230281
series unknown Biological Report

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citationTypeReport
journalBiological Report
languageEnglish

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