Fairly common to common in variety of wooded and scrubby habitats, often near water. Small numbers winter in Western Europe, but most migrate away to Africa. Looks very like Willow Warbler, and best identified by voice: song is a slightly jerky double-noted chiff-chaff, chiff-chaff..., very different from song of Willow Warbler. Relative to Willow Warbler, Chiffchaff is often duller, more brownish overall with weaker pale eyebrow, dark legs, and tends to habitually dip its tail. However, many birds seen are best left unidentified.