Appearance:

Very similar to Common Swift, and often difficult to identify in the field. Seeing the birds against a darker background, as opposed to the sky, brings out some of the characters more clearly. Generally paler and more sandy brown than Common Swift. Differs further from C. Swift by: Rounder wing tip (outermost primary shorter than the next), slightly broader wings, broader and flatter head. White throat patch bigger and more prominent. The face seems paler, which brings out the dark eye-mask. Back slightly darker than upper part of wings. More contrast between outer and inner primaries. Underparts with more pronounced scaly pattern. Flight less acrobatic, with slightly slower wing-beats, more frequent gliding and much less twinkling turns.

Sound:

Similar to Common Swift, but usually very helpful for ID. Almost di-syllabic, with marked accent on second syllable which rapidly drops in pitch, "srrrree-aah". Common swift has a more even call, with accents on first part, without the sudden pitch-drop.

Contact call:

Distribution:

Xeno-canto: map

Ecology:

Birdlife ecology

Links:

Observation.org Latest observations

Video IBC

Image search Flickr NB! May give other species

Sound search at Xeno-canto

CC

Sound recording:Creative Commons,www.xeno-canto.org,Carlos W.,http://creativecommons.org/licenses/by-nc-sa/4.0/

Appearance:

Large and robust warbler with plain plumage, except for the characteristic cap (black in males, rufous in females and juveniles). Upperparts greyish brown and underparts pale grey. Vent white. No white in tail, as opposed to all other black-capped Sylvias in the region. Easily confused with Garden Warbler if the cap is not seen.

Sound:

Song pleasing, varied and loud. Sometimes very similar to Garden Warbler. A typical phrase starts with soft, staccato chattering and mimicry, which after a few seconds changes to a much louder, pure and resonant stream of notes for about 3-5 seconds. No fixed motif, but may end phrases with recurring notes. Often deviates from the characteristic type of song, and identification from song alone may be impossible. May sing first part of song for extended periods without ever reaching the characteristic ending. Alarm call a hard "check", similar to Lesser White-throat. Sometimes with an additional hoarse and nasal "cherrrr".

Alarm call, 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