Clamorous Reed Warbler vs Lesser Swamp Warbler

Clamorous Reed Warbler

Acrocephalus stentoreus

Small24 gWetland

Clamorous reed warbler is a large song thrush-sized warbler at 18–20 cm. The adult has an unstreaked brown back and whitish underparts. The forehead is flattened, and the bill is strong and pointed. The sexes are identical, as with most warblers. It is very like the great reed warbler, but that species has richer coloured underparts. There are a number of races differing in plumage shades. The migratory northern race has the richest brown upperparts, and the endemic Sri Lanka subspecies is the darkest form.

ID text from Wikipedia, CC BY-SA 4.0

Recording: Premchand Reghuvaran · CC BY 4.0

Photo: white_cheeked_barbet · CC BY 4.0

Lesser Swamp Warbler

Acrocephalus gracilirostris

Tiny14 gWetland

The lesser swamp warbler is a plain-coloured smallish bird 14–16 cm long and weighing around 20 g. Its upperparts are rich brown, and it has a white supercilium. The underparts are white, with a rufous wash to the flanks. The long, strong bill has a slightly down-curved upper mandible; it is blackish-yellow with a yellower base. The legs are blue-grey and the eyes are brown. Adults of both sexes and juvenile birds are very similar in appearance.

ID text from Wikipedia, CC BY-SA 4.0

Photo: i_c_riddell · CC BY 4.0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Clamorous Reed Warbler and Lesser Swamp Warbler.