Gansu Leaf Warbler (Phylloscopus kansuensis) [XC616968]
by Bram Piot from Phou Sam Soum, Xiangkhouang, Laos (call)
Gansu Leaf Warbler (Phylloscopus kansuensis) [XC391023]
by Jonathan Martinez from Huzhu Mountains, Qinghai, China (song)
Subspecies
No subspecies.
Phylloscopus proregulus (Sibley and Monroe 1990, 1993) has been split into Pallas's Leaf-Warbler (Phylloscopus proregulus) and Gansu Leaf-Warbler (Phylloscopus kansuensis) following Alström et al. (1997).
This taxon has usually been treated as a junior synonym of nominate subspecies of Pallas's Leaf-Warbler (Phylloscopus proregulus) or of Lemon-rumped Leaf-Warbler (Phylloscopus chloronotus) (which has similarly been lumped within that species). Recent studies, however, have indicated that it is distinct vocally and in habitat choice.