The skylark is a small bird somewhere between a sparrow and a starling in size. It has a streaky brown back and an underside of buffy-white heavily streaked with dark brown. The tail is brown with white sides and the wings have a white line along the rear edge which can be seen when the bird flies. Skylarks also have a short crest which can only be seen when it is raised – usually when the bird is alarmed or excited. There is no difference between the sexes.
Skylarks are often heard long before they are seen. From late winter to mid summer they sing their distinctive, melodic, seemingly endless song from a great height in the sky.