An Odd Dawn Chorus

I went outside around 7:30 this morning to water my plants and heard the usual bird sounds - house finches, cardinals, starlings, ... and the continued bleating of the (presumably battery-operated) alarm clock somebody threw into the trash bin last night.

If the alarm clock were a bird, what would it be?
- It sings all night long.
- The song is three monotonous beeps, a short pause, three beeps, and so on.

A drugged-out whippoorwill (to continue our nightjar theme)? It is known for its "vigorous deliberate call...which it may repeat 400 times before stopping."