...and our mother bird in the woods said she is a Nighthawk.
Well, OK, what she actually said sounded more like "peen, peen, peen," but we understand this is Nighthawk for, well, just about anything a Nighthawk might have to say. The Whip-poor-will, on the other hand, makes a cheerful little sound resembling its name. While the birds look quite a lot alike and belong to the same family of Nightjars, these two songs are not easily confused. So, there you have it.