Species Polyboroides






^ clements, j. f. 2007. clements checklist of birds of world, 6th edition. cornell university press. downloadable cornell lab of ornithology
^ polyboroides . integrated taxonomic information system. retrieved 14 april 2011. 
^ birdlife international (2009). polyboroides typus . iucn red list of threatened species. version 2010.4. international union conservation of nature. retrieved 14 april 2011. 
^ birdlife international (2009). polyboroides radiatus . iucn red list of threatened species. version 2010.4. international union conservation of nature. retrieved 14 april 2011. 






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