Kalmar "Rallidae" tana nufin dangin tsuntsaye da aka fi sani da rails, crakes, coots, da gallinules. Tsuntsaye masu matsakaici ne zuwa ƙanana masu ƙaƙƙarfan jiki, gajerun fukafukai, da dogon baki, siriri. Ana samun su a wurare masu dausayi da kuma marshes kuma an san su da ƙaƙƙarfan ƙafafu masu ƙarfi, waɗanda ke ba su damar kewaya cikin ciyayi masu yawa. Iyalin Rallidae sun haɗa da nau'ikan nau'ikan sama da 150, waɗanda aka rarraba a duk faɗin duniya, ban da Antarctica da wasu tsibiran teku.