The other night I was out in the meadow taking some sunset pictures — a beautifully serene setting. A light breeze, songbirds in the distance, no sign of humans other than myself, and swallows floating around above. As I squatted down to get a good angle, what sounded like some kind of fluttering pterodactyl scream came zooming down at me and scared me half to death. Turns out they weren't swallows, but nighthawks:
Here on the East Coast, the nighthawks form up into large migration groups at dusk in late August. On a good night, we may see hundreds coursing through the sky eating insects. And yes, the calls are cool!