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 associated with the Malagasy warblers—Pycnonotidae (bulbuls) and even more so Timaliidae (Old World babblers) and Old World warblers—were utilized as "wastebin taxa", combining unrelated lineages that shared some similarities in ecology and morphology.