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Gray's grasshopper warbler (''Helopsaltes fasciolatus''), also known as Gray's warbler, is a species of
grass warbler The grass warblers are small passerine birds belonging to the genus ''Locustella''. Formerly placed in the paraphyletic "Old World warbler" assemblage, they are now considered the northernmost representatives of a largely Gondwanan family, the L ...
in the
family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Locustellidae Locustellidae is a newly recognized family of small insectivorous songbirds ("warblers"), formerly placed in the Old World warbler " wastebin" family. It contains the grass warblers, grassbirds, and the '' Bradypterus'' " bush warblers". These bi ...
; it was formerly included in the "
Old World warbler Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Two families were split out initially, the ci ...
" assemblage. The
Sakhalin grasshopper warbler 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 on Sak ...
was formerly considered conspecific.


Distribution and habitat

This small
passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...
bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...
breeds in southern
Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part o ...
,
northeastern China Northeast China or Northeastern China () is a geographical region of China, which is often referred to as "Manchuria" or "Inner Manchuria" by surrounding countries and the West. It usually corresponds specifically to the three provinces east of ...
and
Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republi ...
. It is migratory, wintering in southeast
Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an ...
. 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 great reed warbler (''Acrocephalus arundinaceus'') is a Eurasian passerine in the genus '' Acrocephalus''. The genus name ''Acrocephalus'' is from Ancient Greek ''akros'', "highest", and ''kephale'', "head". It is possible that Naumann and N ...
. The adult has an unstreaked olive-brown back, uniformly grey breast and buff underparts, with unmottled dull orange undertail coverts. The song is a short phrase, loud and distinctive; nothing like the
insect Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs ...
-like reeling of European ''Locustella'' species, and more musical than that of
Pallas's grasshopper warbler Pallas's grasshopper warbler (''Helopsaltes certhiola''), also known as the rusty-rumped warbler, is an Old World warbler in the grass warbler genus ''Helopsaltes''. It breeds in the eastern Palearctic: from the Altai Mountains, Mongolia and Tra ...
.


References

Gray's grasshopper warbler Birds of North Asia Birds of Manchuria Gray's grasshopper warbler Gray's grasshopper warbler Taxobox binomials not recognized by IUCN {{Locustellidae-stub