Greenish Warbler

The greenish warbler is a widespread leaf warbler with a breeding range in north-eastern Europe and temperate to subtropical continental Asia. It is strongly migratory and winters in India. The specific name comes from the Greek for 'bowed', from the similarity to the willow warbler. It is not uncommon as a spring or early autumn vagrant in western Europe (Wikipedia, general species account).

Its song is a high, jerky trill, in some populations containing a sequence of down- and more rarely up-slurred notes. The nest is on the ground in low shrub. In Bhutan, individuals are often seen in the hot months in humid fir forest up to about 3,800m but do not breed there (Wikipedia, general species account).