Passerida incertae Sedis
Rather basal Passerida, most of which seem to constitute several small but distinct superfamilies. Most occur in Asia, Africa and North America.
- Possible superfamily "Dicaeoidea" – sunbirds and flowerpeckers
- Nectariniidae: sunbirds
- Dicaeidae: flowerpeckers
- Possible superfamily Bombycilloidea – waxwings and allies
- Bombycillidae: waxwings
- Dulidae: Palmchat. Tentatively placed here.
- Ptilogonatidae: silky flycatchers. Tentatively placed here.
- Hypocoliidae: Hypocolius. Tentatively placed here.
- Possible superfamily Paroidea – titmice and allies
- Paridae: tits, chickadees and titmice
- Remizidae: penduline tits. Sometimes included in Paridae.
- Stenostiridae: stenostirids ("flycatcher-tits"). A newly assembled family; sometimes included in Paridae.
- Possible superfamily Sittoidea or Certhioidea – wrens and allies.
- Sittidae: nuthatches
- Tichodromadidae: Wallcreeper. Tentatively placed here.
- Certhiidae: treecreepers
- Salpornithidae: Spotted Creeper. Tentatively placed here; might belong into Certhidae.
- Troglodytidae: wrens
- Polioptilidae: gnatcatchers
- Possible monotypic superfamily N.N.
- Promeropidae: sugarbirds
- Possible monotypic superfamily N.N.
- Family N.N.: Hyliotas. Recently split from Sylviidae.
- Possible superfamily Reguloidea – kinglets. Tentatively placed here.
- Regulidae: kinglets
Read more about this topic: Muscicapoidea, Systematics and Phylogeny