English: Thick-billed Warbler, Thick-billed Reed Warbler
Russian: Толстоклювая камышевка          
Mongolian: Банхар охилбялзуухай, Банхар хардай
German: Dickschnabel-Rohrsanger
French: Rousserolle a gros bec
Japanese: ハシブトオオヨシキリ (Hashibuto-o-yoshikiri)     

Body length: 16-17 ½ cm.

Breeds in S Siberia in dense vegetation of willows, young birch etc. beside taiga bogs. Winters in India. Extremely rare vagrant (mostly in autumn) in Europe.

Identification: Slightly smaller than Great Reed Warbler, with short, stubby bill and few plumage features. Greyish-brown above with slightly warmer red-brown rump and tail-base (in flight can recall nightingale, since tail is not only rusty but also long and rounded), and dirty white below with buff-tinged breast, flanks and undertail-coverts. Lacks prominent supercilium, has just light grey lores and diffuse buffy grey-white eye-ring. Crown slightly warmer brown, on many creating suggestion of brown cap. Primary projection medium-long. Legs greyish. Rather sluggish in actions, often hops in forward-crouched posture with tail lowered.