Horned Larks have a short song (called intermittent, BNA) and a more extended song (recitative, BNA), which are given interchangeably. The song is often given in flight (perched bird giving both songs predawn, Mar, NE).
short (intermittent) song
extended (recitative) song (the last on the recording)
the above recitative song, time scale reduced
American Pipit song flight. The song consists of the same repeated elements that speed up as the bird descends to the ground (July, CO).
time scale reduced