drab grey-brown except for lighter eye-stripe (Hawaii, USA; 2007-04-01)

Japanese Bush Warbler
Cettia diphone

Native Range: Eurasia

Notes: a drab little bird introduced into Hawaii where it is now fairly common; it has a pretty song, which accounts for it being an oft-caged bird from which escapees established feral populations outside the species' natural range in Japan and the Asian mainland; no sexual dimorphism.

frontal view; quite drab all over (Hawaii, USA; 2007-04-01)