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By: Cavarzere, Vagner - Moraes, Gabriel Parmezani - Roper, James Joseph - Silveira, Luís Fábio - Donatelli, Reginaldo JoséType: ArticleIn: Papéis Avulsos de Zoologia (São Paulo)Volume:Series:Issue:Date: 2013-01-01Page Range:Publication Info:Subjects: Bird surveying method Breeding Bird Survey Christmas Bird Count Methodological protocols Pan-European Common Bird Monitoring Scheme seasonal variation temporal variation