A tiny bird with a long, fine decurved bill and stiff tail. It climbs up tree trunks to small boughs in a spiral route. It can often go unnoticed because of its mottled brown plumage which has the same tone as the bark. It feeds on tiny insects, larvae and mites hidden under the bark, using its extraordinary bill to probe. It occurs in generally dense woodland in Extremadura and is present throughout the year.