The Western Olivaceous Warbler is migratory. It breeds in North Africa and southern Iberia and winters in western sub-Saharan Africa. It also uses dry scrub, orchards, and thickets along rivers.
It is 13–15 cm long.
It uses dry areas with trees and shrubs, woodland, orchards, and riverine thickets. It feeds on invertebrates and can glean them from vegetation.
An extinction-risk assessment has not been added yet.