Small, pallid olive-gray warbler. Very similar to other Iduna and Acrocephalus species. Note its long and slender bill and faint pale wing panel (most prominent when plumage is fresh, sometimes not noticeable). Pumps its long tail continuously as it flits around in bushes and trees after small insects, a behavior which separates it from very similar Acrocephalus warblers. Found in open woodlands, riparian forest, as well as dry and semi-arid zones; strong connection with Tamarix bushes. Call is a dry and harsh “chack.” Song is a repeating scratchy sequence.