Greg -- They are all heavily cropped -- we were standing well back, at a distance where even a firing squad of twenty birders and photographers didn't spook the birds. That plus the lack of light (I shot at ISO 6400 and still couldn't get much shutter speed) explains the lack of sharpness. I shot for a while with 500 + 1.4x then shifted to 2x -- two of the three posted shots are with the doubler.
