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WikiPedia: Saltator coerulescens http://www.birds.cornell.edu/clementschecklist/dow... http://datazone.birdlife.org/species/factsheet/103... http://www.boldsystems.org/index.php/TaxBrowser_Ta... http://www.irmng.org/aphia.php?p=taxdetails&id=104... http://www.iucnredlist.org/details/103812647/0 http://zoobank.org/NomenclaturalActs/32422728-8CC1... https://www.itis.gov/servlet/SingleRpt/SingleRpt?s... https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwt... https://ebird.org/species/grasal1 https://eol.org/pages/915862