Eastern Bonelli's warbler is a small passerine bird, found in forest and woodland.

The adult has a plain grey-green back, green-toned rump and wings and whitish underparts.

The song is a fast monotone trill, only slightly different from western Bonelli's, and also some similarity to the wood warbler.

[5] The genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch").

[6] The English name for this bird commemorates the Italian ornithologist Franco Andrea Bonelli.