Heterophasia, the sibias, is a bird genus in the family Leiothrichidae. By some, the genus is considered monotypic, including only H. picaoides. It contains the following species: \n* Rufous-backed sibia, Heterophasia annectens – sometimes in Leioptila \n* White-eared sibia, Heterophasia auricularis – sometimes in Malacias \n* Rufous sibia, Heterophasia capistrata – sometimes in Malacias \n* Grey sibia, Heterophasia gracilis – sometimes in Malacias \n* Dark-backed sibia, Heterophasia melanoleuca – sometimes in Malacias \n* Black-headed sibia or Desgodin's sibia, Heterophasia desgodinsi – sometimes in Malacias, formerly included in H. melanoleuca \n* Long-tailed sibia, Heterophasia picaoides \n* Beautiful sibia, Heterophasia pulchella – sometimes in Malacias