The families to which the Malagasy warblers were formerly assigned—Pycnonotidae (bulbuls) and even more so Timaliidae (Old World babblers) and the Old World warbler—were used as "wastebin taxa", uniting unrelated lineages that were somewhat similar ecologically and morphologically.
The families previously connected to the Malagasy warblers—Pycnonotidae (bulbuls) and Timaliidae (Old World babblers)—and even more so Old World warblers, were used as "wastebin taxa", uniting unrelated lineages that shared some similarities in ecology and morphology.