Sakhalin grasshopper warbler

Sakhalin grasshopper warbler
from Hokkaido, Japan
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Passeriformes
Family:	Locustellidae
Genus:	Helopsaltes
Species:	H. amnicola
Binomial name
Helopsaltes amnicola (Stepanyan, 1972)
Synonyms
Locustella amnicola

Sakhalin grasshopper warbler (Helopsaltes amnicola), is a species of grass warbler in the family Locustellidae; it was formerly included in the "Old World warbler" assemblage.

Distribution and habitat

This small passerine bird breeds from Sakhalin island, the southern Kuril Islands and Hokkaido in Japan. It is a species found in lowland and coastal regions, nesting in forests or thickets.

Description

This is the largest of all the Locustella warblers, approaching the size of the great reed warbler. The adult has an unstreaked olive-brown back, uniformly grey breast and buff underparts, with unmottled dull orange under tail-coverts.

The song is a short phrase, loud and distinctive; nothing like the insect-like reeling of European Locustella species, and more musical than that of Pallas's grasshopper warbler.