This family of passerine birds is native to Australia and surrounding islands. It has a complicated taxonomic history. If one only includes the Quail-thrushes (Cinclosoma) and Jewel-babblers (Ptilorrhoa), the family is known as Cinclosomatidae. But when the Whipbirds (Psophodes) and Wedgebills (Androphobus) are included, the name Psophodidae has priority. I will follow the latter classification. This family should not be confused with the Trumpeters (Psophiidae).
Hybridization has only been recorded in the genus Cinclosoma. Alleged hybridization between Chestnut-backed Quail-thrush (C. castanotum) and Western Quail-thrush (C. marginatum) was confirmed by phylogenetic analyses (Toon et al., 2012).
Toon, A., Austin, J. J., Dolman, G., Pedler, L. & Joseph, L. (2012). Evolution of arid zone birds in Australia: Leapfrog distribution patterns and mesic-arid connections in quail-thrush (Cinclosoma, Cinclosomatidae). Molecular Phylogenetics and Evolution 62, 286-295.