The black-and-white warbler feeds in a manner similar to a nuthatch or a creeper. Common starlings will take over Eurasian nuthatch nest holes, reducing their breeding success. The red-breasted nuthatch ("Sitta canadensis") is a small songbird. The Eurasian nuthatch eats mainly insects, particularly caterpillar and beetles. The white-breasted nuthatch often travels with small mixed flocks in winter. Exceptions include the blue and white blue vanga and the blue-grey nuthatch vanga. The Corsican nuthatch is France's sole endemic species. The red-breasted nuthatch is monotypic across its extensive range. This nuthatch is omnivorous, eating insects and seeds. The red-breasted nuthatch, like all nuthatches, is monogamous. One of these was the red-breasted nuthatch. In much of its range, Eurasian is the only nuthatch present. This species is very similar to the brown-headed nuthatch of the southeastern U.S. The currently recognised nuthatch species are tabulated below. The appearance of the blue nuthatch differs significantly from all other nuthatches.