| Source | Genus | Species | Subspecies |
|---|---|---|---|
|
All sources treat races robertsi and clanceyi as synonyms of ngamiense, explicitly or otherwise. *Treatment of etchecopari confused: listed under both castaneum and nominate. |
|||
| Kemp (1988) | Glaucidium | capense | |
| Gill et al. (2022) | ngamiense | ||
| scheffleri | |||
| castaneum | |||
| etchecopari | |||
| albertinum | |||
| Holt et al. (1999, 2020) | Glaucidium | capense | |
| Clements et al. (2021) | ngamiense | ||
| scheffleri | |||
| castaneum | |||
| etchecopari | |||
| albertinum | |||
| Dickinson & Remsen (2013) | Glaucidium | capense | |
| ngamiense | |||
| scheffleri | |||
| castaneum | |||
| etchecopari | |||
| albertinum | |||
| König et al. (1999) | Glaucidium | capense | |
| del Hoyo & Collar (2014) | ngamiense | ||
| BirdLife International (2022a,b)* | scheffleri | ||
| Holt et al. (2016) | etchecopari | ||
| castaneum | |||
| albertinum | |||
| König et al. (2008) | Taenioglaux | capense | |
| Mikkola (2013) | ngamiense | ||
| scheffleri | |||
| castanea | |||
| etchecopari | |||
| albertina | |||