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) [XC124440]
by id from Koh Ker, Kulen, Cambodia (call)
White-rumped Falcon (Polihierax insignis) [XC88888]
by Frank Lambert from Sorng Rokavorn Community Forest, Oddar Meanchey Province, Cambodia (call, calls (song?))
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.