After Livezey & Zusi, 2007, with species from Sibley & Monroe, 1990 and Peterson, 2002-2011

<==o Falconiformes Seebohm, 1890 [incl. Cathartae (Coues, 1824)] (falcons, hawks, eagles, etc.; päiväpetolinnut)
   |-- Cathartae (Coues, 1824)
   `--o Accipitres (Vieillot, 1816)
      |--o Sagittariidae Finsch & Hartlaub, 1870 [Serpentariides Seebohm 1890] (sihteerilinnut)
      |  |--o †Pelargopappus
      |  |  |-- †P. schlosseri
      |  |  `-- †P. magnus
      |  `-- Sagittarius serpentarius (Secretarybird; sihteeri)
      `--o Falconides (Sharpe, 1874)
         |--o Falconoidea (Vigors, 1824)
         |  |-- Falconidae Vigors, 1824 (falcons; jalohaukat)
         |  `--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 (hawks, eagels and vultures; haukat, kotkat ja korppikotkat)

Reference(s):