River Warbler
NameRiver Warbler
Common NameRiver Warbler
Scientific NameLocustella fluviatilis
FamilyLocustellidae
Wingspan (cm)19.5
Length (cm)13.5
Weight (g)15
Plumage DetailsUpperparts are plain olive-brown, contrasting with whitish underparts that show faint streaking on the throat, breast, and flanks. It has a pale supercilium and a dark eye-stripe. The undertail coverts may have faint barring.
Vocalization / CallThe song is a loud, monotonous, mechanical-sounding trill, often compared to a sewing machine or cicada, typically rendered as 'zree-zree-zree-zree...'.
Primary Dietinsectivore
Primary Habitatsforest, wetland
Conservation Statusleast-concern
Geographic RangeBreeds across eastern Europe and western Asia, from central Germany eastward to the Ural Mountains. It migrates to southeastern Africa for the non-breeding season.
Identifying FeaturesPlain olive-brown plumage, Subtly streaked throat and breast, Pale supercilium, Distinctive mechanical, trilling song, Prefers dense, damp vegetation
Description
The River Warbler is a medium-sized, rather plain warbler with olive-brown upperparts and a subtly streaked throat and breast. It is known for its distinctive, mechanical-sounding song, often delivered from dense vegetation near water.
