Blackcap, Sylvia atricapilla, is a common and widespread sylviid warbler which breeds throughout northern and temperate Europe. Its color pattern is unique in the genus Sylvia; the Blackcap's closest living relative is the Garden Warbler which looks different but has very similar vocalizations. These two, whose ranges extend farther northeastwards than other Sylvia, seem to form sister species well distinct from the other typical warblers.
Garden Warbler, Sylvia borin, is a common and widespread typical warbler which breeds throughout northern and temperate Europe into western Asia. This small passerine bird is strongly migratory, and winters in central and southern Africa.
