Habitat
Wooded grasslands and open forest, chiefly deciduous dipterocarp and mixed deciduous forest of the plains and foothills. From sea-level - 915 m.
White-rumped Falcon (Polihierax insignis) [XC88888]
by Frank Lambert from Sorng Rokavorn Community Forest, Oddar Meanchey Province, Cambodia (call, calls (song?))
White-rumped Falcon (Polihierax insignis) [XC124440]
by id from Koh Ker, Kulen, Cambodia (call)
Subspecies
Sometimes awarded separate, monotypic genus, Neohierax. Racial variation slight. Validity of subspecies requires reassessment.
The following 3 subspecies are recognised:
insignis Walden, 1872 - Western and central Burma, especially in valley of R Irrawaddy.
cinereiceps Baker, ECS, 1927 - Southern Burma (Tenasserim) and Thailand.
harmandi (Oustalet, 1876) - Southern Indochina, in southern and central Laos, southern Vietnam (southern Annam, Cochinchina) and Kampuchea.