At this time of year, Tree Swallows are busy flying about their preferred breeding sites, man made nest boxes. Since they are not too concerned with humans being fairly close, it can offer the nature photographer a chance for some in flight images. I outlined this method in a post two years ago called Photographing Swallows in flight. I spent a couple of hours at a nearby nesting site and came away with a few images.
All Images are Available for Licensing at Singular Video&Pix