The Corsican nuthatch (Sitta whiteheadi) is a species of bird in the nuthatch family Sittidae. It is a relatively small nuthatch, measuring about 12 cm (4.7 in) in overall length. The upperparts are bluish-grey, the underparts greyish-white. The male is distinguished from the female by its entirely black crown. The species is sedentary, territorial and not very shy. It often feeds high in Corsican pines (Pinus nigra var. corsicana, syn. P. nigra subsp. laricio), consuming mainly pine seeds, but also catching some flying insects. The breeding season takes place between April and May; the nest is placed in the trunk of an old pine, and the clutch has five to six eggs. The young fledge 22 to 24 days after hatching.
The Corsican nuthatch is found only on the island of Corsica, where it populates the old forests of high-altitude Corsican pines, descending lower in winter. Its scientific name comes from John Whitehead, the ornithologist who brought the bird to the attention of the scientific community in 1883. The Corsican nuthatch is closely related to the Chinese nuthatch (S. villosa) and the red-breasted nuthatch (S. canadensis). It is threatened by loss of nesting sites and habitat fragmentation, with an estimated population size of about 2,000 individuals, possibly in moderate decline. Due to the small population size and the limited range, the conservation status of the Corsican nuthatch is classed as "vulnerable" by the International Union for Conservation of Nature.
