Ewen, John G.; Flux, Ian & Ericson, Per G. P. (2006): Systematic affinities of two enigmatic New Zealand passerines of high conservation priority, the hihi or stitchbird Notiomystis cincta and the kokako Callaeas cinerea. Molecular Phylogenetics and Evolution40(1): 281–284. doi10.1016/j.ympev.2006.01.026Texto completo PDFArchivado el 19 de abril de 2021 en Wayback Machine.
Gibb, Gillian C.; Shepherd, Lara D. (2022). «Recent evolution of extreme sexual dimorphism in the huia (Heteralocha acutirostris; Callaeidae)». Molecular Phylogenetics and Evolution175: 107575. doi:10.1016/j.ympev.2022.107575.
Ewen, John G.; Flux, Ian & Ericson, Per G. P. (2006): Systematic affinities of two enigmatic New Zealand passerines of high conservation priority, the hihi or stitchbird Notiomystis cincta and the kokako Callaeas cinerea. Molecular Phylogenetics and Evolution40(1): 281–284. doi10.1016/j.ympev.2006.01.026Texto completo PDFArchivado el 19 de abril de 2021 en Wayback Machine.
Ewen, John G.; Flux, Ian & Ericson, Per G. P. (2006): Systematic affinities of two enigmatic New Zealand passerines of high conservation priority, the hihi or stitchbird Notiomystis cincta and the kokako Callaeas cinerea. Molecular Phylogenetics and Evolution40(1): 281–284. doi10.1016/j.ympev.2006.01.026Texto completo PDFArchivado el 19 de abril de 2021 en Wayback Machine.