The Alaudidae are the Lark family of Conirostral birds. They are characterized by a bill forming an elongated cone, the mandibles of equal length, the upper convex, slightly curved. The nostrils are at the base of the bill, oval, and partly covered by small feathers directed forwards. The feathers of the head are capable of being erected so as to f... Found on http://www.probertencyclopaedia.com/browse/BA.HTM