Mongolian Lark

The Mongolian lark is a large, pale lark about 19 centimetres long, of which 6.7–8.6 centimetres is tail, with a bill 1.5–1.7 centimetres long. The sexes do not differ conspicuously. The forehead, crown and crown sides are dark rusty brown to light brown, the back of the head and nape are paler, and a whitish line separates the nape from the back plumage. The back and rump are grey-brown with fine lengthwise streaking. Two subspecies are recognised. (German Wikipedia, general species account)

Its range is Central Asia. It is one of the species that imitate many other birds in its song, and in Beijing in the 1920s tens of thousands were still traded on the markets, known for the variety of their singing as the hundred melodies. (German Wikipedia, general species account)