Large-billed Leaf Warbler

The large-billed leaf warbler is a fairly large leaf warbler with a single wing bar, a prominent yellowish-white eyebrow, a contrasting broad dark stripe through and behind the eye, a large darkish upper mandible, a dark crown and greyish ear coverts. It can be confused with the Arctic warbler. It is best identified by its distinctive call, a two-note dir-tee with the second note much higher, given often and at regular intervals (Wikipedia, general species account).

It lives in dense vegetation, occasionally in towns, and is more often heard than seen (Wikipedia, general species account).