After Prum, Berv, Dornburg, Field, Townsend, Lemmon & Lemmon, 2015, with species from Sibley & Monroe, 1990 and Peterson, 2002-2011

<==o Accipitriformes Vieillot, 1816 [Accipitrimorphae Vieillot, 1816; incl. Cathartae (Coues, 1824)] (hawks, eagles, etc.; päiväpetolinnut)
   |-- Cathartae Coues, 1824 [Vulturides; Cathartiformes Coues, 1884]
   `--o Accipitres (Vieillot, 1816)
      |--o Sagittariidae Finsch & Hartlaub, 1870 [Serpentariides Seebohm 1890] (sihteerilinnut)
      |  |--o †Pelargopappus
      |  |  |-- †P. schlosseri
      |  |  `-- †P. magnus
      |  `-- Sagittarius serpentarius (J. F. Miller, 1779) Hermann, 1783 (Secretarybird; sihteeri)
      `--+--o Pandionidae Sclater & Salvin, 1873 (Ospreys; sääkset, kalasääsket)
         |  |?- †Pandionidae genera et species indet. aff. Pandion [Fayum, Egypt] [Rasmussen, Olson & Simons, 1987]
         |  `--o Pandion Linneus, 1758 (sääkset, kalasääsket)
         |     |-- †P. lovensis Becker, 1985
         |     |-- †P. homalopteron Warter, 1976
         |     `--+-- †P. sp. [Lee Creek Mine, North Carolina] [Olson & Rasmussen, 2001]
         |        `-- P. haliaetus Linneus, 1758 (Osprey; sääksi, kalasääski)
         `--o Accipitroidea (Vieillot, 1816)
            `-- Accipitridae Vieillot, 1816 (hawks, eagels and vultures; haukat, kotkat ja korppikotkat)

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