 The "aberrant greenbuls" of the genera "Bernieria" and "Xanthomixis" are actually Malagasy warblers.To recognize this, they are also called bernieria and tetrakas rather than greenbuls.Likewise, the golden greenbul is not a typical greenbul, but apparently the representative of a distinct and ancient lineage of bulbuls, which might include the black-collared bulbul.