A small nuthatch endemic to a tiny area in northeastern Algeria with a sharply demarcated white eyebrow. Female similar to the male but slightly duller with a dark gray forehead. Very similar to the closely related Corsican Nuthatch. Told from Corsican Nuthatch by black forehead in male (all black cap in Corsican), unmarked undertail coverts, and paler buff underparts. Breeds in old-growth montane oak and mixed forests. Song is a loud, repeating, and rapid "Kyi kyi kyi kyi kyi kyi…" Call is a tit-like nazal "Dzuuee."