Appearance:

Olive green upperparts, yellowish chest with gradual transition to off-white belly. Very similar to Chiff-chaff, and most field characters are subtle and often hard to see. Distinguished by (usually) pale, yellow-brown legs, dark framing to ear-coverts, stronger supercilium. Long primary projection (often 3/4ths the length of tertials) with irregularly spaced tips (visible when wing folded). Wings slightly more pointed than in Chiff-chaff, and not so fan-shaped. Juveniles often with whole underparts yellow. Frequently flicks tail, but not sideways (unlike Chiff-chaff). Generally also more calm when moving among the foliage.

Sound:

By far most easily identified by it's call or song. Contact/alarm call a soft, plaintive ascending "hoo-eet". Similar to Chiff-chaff, but first part more drawn, giving it a disyllabic feel. Song: A 3-5 second, falling phrase of soft, rippling "svi-svi" sounds, starting high with some attack, and then falling in a mellow manner. The phrase lacks any conclusion, and diminishes both in strength and tempo.

Song:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC

Appearance:

Rufous red face, throat and chest, framed in slate grey in adults of both sexes. Olive brown to grey upperparts and dull white underparts. Head rather large, and body rather stocky when plumage puffed, despite thin bill and slender legs. Juveniles lack the red front and are heavily spotted in buff on a dark brown body with barred chest. Adults pretty unmistakable when seen well. Flight usually low and darting, with quick changes of directions before disappearing in thick bushes. Posture usually erect with frequent flicking of tail and wings.

Sound:

Alarm call a thin, electric "tick", often in series with decelerating tempo. Song medium to very high pitched, with mostly clear tones with a liquid quality. Timbre reminiscent of Wren or Dunnock, but with a much more varied structure and tempo. Pitch ranges from very high to low, almost thrush-like, notes. No recognizable motifs. Often ends on a rising or falling pitch, giving it a "Chinese" accent.

Song:

Distribution:

Wikipedia: map (se also Xeno-canto below)

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

Featherbase

CC