Tonight, at dusk, I was standing in a field and a large group of birds appeared. They were diving for insects overtop of my flock of sheep. To my amazement they were Common Nighthawks. There were more than 20 of them. I was able to get a definite identification as the thickly barred wings on the underside were very apparent and nothing really comes close to them in size and shape(other than a Whip-poor-will). And of course they have a distinctive flight pattern.
Observer: Ryan Van Loon