Lesser Swamp Warbler vs Moustached Warbler

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

Moustached Warbler

Acrocephalus melanopogon

Tiny11 gWetland

The moustached warbler is 12–13 cm (4.7–5.1 in) long, slightly smaller than the similar sedge warbler (Acrocephalus schoenobaenus). The adult has a finely streaked brown back and white underparts. The forehead is flattened, there is a prominent whitish supercilium, grey ear coverts, and the bill is strong and pointed. The sexes are identical, as with most warblers, but young birds are more heavily streaked and have markings on the breast. The song is fast and similar to the sedge warbler and reed warbler, with some mimicry and typically acrocephaline whistles added.

ID text from Wikipedia, CC BY-SA 4.0

Recorded by Able Lawrence · Song · Ravanhar, Unnao, Uttar Pradesh, India · CC BY 4.0

Photo: Julien Fougeroux · CC BY 4.0

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