A small pallid, long-winged leaf warbler. Separable from the closely related Western Bonelli's Warbler by range and vocalizations. Similar to commoner leaf warblers such as Common Chiffchaff and Willow Warbler, but plainer facial pattern, prominent yellowish-green wing panel and outer tail feathers, and very white underparts aid in identification. Call is a distinctive sharp “tzip.” Flits around in bushes and trees searching for tiny arthropods; often hovers while feeding. Breeds in dense Mediterranean scrub and forests. During migration found in various vegetated habitats including desert acacia wadis.