Those are very nice shots, but it seems like it would be a lot easier to
just use cheap flash units to get the same effect. For compositional
purposes, it also seems like you would get better shots using a telephoto
lens, getting back a bit, composing the shot and then pushing the shutter
release instead of getting so many cut-off birds in some photos achieved
with the shutter tripping mechanism that doesn't require your input.

Incidentally, is the exposure time dictated by flash duration or shutter
speed? I ask because I noticed some ghosting in some of the images which
suggests that the flash duration might be the shorter of the two (or you
flash units might not be sync'd perfectly).

Eric Miller

www.dyesscreek.com