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A breeding bird survey monitors the status and trends of bird populations. Data from the survey are an important source for the range maps found in field guides. The North American Breeding Bird Survey is a joint project of the United States Geological Survey (USGS) and the Canadian Wildlife Service. The UK Breeding Bird Survey is administered by the British Trust for Ornithology, the Joint Nature Conservation Committee, and the Royal Society for the Protection of Birds.

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  • A breeding bird survey monitors the status and trends of bird populations. Data from the survey are an important source for the range maps found in field guides. The North American Breeding Bird Survey is a joint project of the United States Geological Survey (USGS) and the Canadian Wildlife Service. The UK Breeding Bird Survey is administered by the British Trust for Ornithology, the Joint Nature Conservation Committee, and the Royal Society for the Protection of Birds. The results of the BBS are valuable in evaluating the increasing and decreasing range of bird population which can be a key point to bird conservation. The BBS was designed to provide a continent-wide perspective of population change. (en)
  • Reprodukta birdenketo kontrolas la statuson kaj tendencojn de birdaj populacioj. Informoj el tiaj enketoj estas grava fonto por starigi la teritoriajn mapojn kiuj poste aperas en birdaj gvidiloj. La Nordamerika Reprodukta Birdenketo (North American Breeding Bird Survey) estas kuna projekto de respektive usona kaj kanada servoj nome la United States Geological Survey (USGS) kaj la Canadian Wildlife Service. La Brita Reprodukta Birdenketo (UK Breeding Bird Survey) estas administrata de la British Trust for Ornithology, la Joint Nature Conservation Committee, kaj la Royal Society for the Protection of Birds. La rezultoj de la Birdenketo estas valoraj en esplorado de la kreskantaj kaj malkreskantaj vicoj da birdopopulacio kiuj povas esti ĉefaj punktoj al birdokonservado. La BS estis dizajnita por disponigi kontinent-kovrantan perspektivon de populacioŝanĝo. (eo)
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  • Reprodukta birdenketo kontrolas la statuson kaj tendencojn de birdaj populacioj. Informoj el tiaj enketoj estas grava fonto por starigi la teritoriajn mapojn kiuj poste aperas en birdaj gvidiloj. La Nordamerika Reprodukta Birdenketo (North American Breeding Bird Survey) estas kuna projekto de respektive usona kaj kanada servoj nome la United States Geological Survey (USGS) kaj la Canadian Wildlife Service. La Brita Reprodukta Birdenketo (UK Breeding Bird Survey) estas administrata de la British Trust for Ornithology, la Joint Nature Conservation Committee, kaj la Royal Society for the Protection of Birds. (eo)
  • A breeding bird survey monitors the status and trends of bird populations. Data from the survey are an important source for the range maps found in field guides. The North American Breeding Bird Survey is a joint project of the United States Geological Survey (USGS) and the Canadian Wildlife Service. The UK Breeding Bird Survey is administered by the British Trust for Ornithology, the Joint Nature Conservation Committee, and the Royal Society for the Protection of Birds. (en)
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  • Reprodukta birdenketo (eo)
  • Breeding bird survey (en)
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