; class Aves, order Passeriformes)
A monospecific family (Tichodroma muraria), which is a small, grey bird with brilliant crimson and black wings. It has a long, slender, decurved bill, long, broad wings, and a short tail. Its legs are short and its feet large. It inhabits high mountains, moving lower in winter, feeds on insects, and nests in rock crevices. It is found in southern Europe and Asia.
Subjects: Zoology and Animal Sciences.