michaelbomford's Identifications

If I'm correct, this would be another creature off my wishlist.

They were flying around in circles in the typical way that swallows were. The backside was iridescent greenish and the bottom side is white. Hard to ID from the distance and sadly none of them landed so I couldn't attempt to photograph them with the binoculars and with how fast they were flying I couldn't even attempt to point them at a moving target. This sadly really was the best I could do with what I had.