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A monograph of the Alcedinidae . HALCYON DIOPS PL Halcyon nigrocyanea Illustration biodiversitylibrary org title Sharpe Richard Bowdler NameFound Halcyon diops NameConfirmed Halcyon diops EOLID NameBankID Biodiversity Heritage Library monograph of the Alcedinidae or family of kingfishers Kingfishers Harvard University