Family Leaf-warblers (Phylloscopidae)

Least Concern

Gansu Leaf-warbler (Phylloscopus kansuensis)


French: Pouillot du Gansu German: Kansulaubsänger Spanish: Mosquitero de Gansu

Phylloscopus proregulus kansuensis


, 1933,

vicinity of Lauhukou, north Gansu Province, China


Formerly treated as a junior synonym of P. proregulus or of P. chloronotus (which has similarly been lumped within that species). Various studies, however, have indicated that it is distinct vocally, genetically and in habitat choice; in playback experiments, present species and P. forresti responded little or not at all to each other’s songs. Monotypic.


C China (NE Qinghai, SW Gansu); non-breeding range unknown.

Descriptive notes

9–10 cm. A small, “chunky” leaf-warbler with prominent head stripes. Has well-defined median crownstripe pale buffish with faint yellow tinge, or whitish, equally... read more


Song begins with a faltering series of thin, high-pitched, slightly harsh “tsrip” and clear “tsip”... read more


Breeds mainly in deciduous broadleaf forest, including e.g. birch (Betula) and poplar (... read more

Food and feeding

Known to eat insects, but no studies undertaken.


Almost unknown. On basis of male singing activity, season presumably begins in mid-May to late May. One nest found, c. 8 m up in birch tree... read more


Apparently leaves breeding grounds in second half Oct and returns at least from late Apr; location... read more

Status and conservation

Not assessed. Locally common, but no population estimates available. No obvious threats have been noted.

Recommended citation

Alström, P. (2019). Gansu Leaf-warbler (Phylloscopus kansuensis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 25 August 2019).