I had really wanted to capture the mating behavior of these guys :)
Camera Model: Canon EOS 40D
Shutter speed: 1/800 sec
Aperture: 8
Exposure mode: Av
Exposure compensation: -1/3
ISO: 320
Focal length: 500mm f/4 + 1.4x
Using Pan Pod - http://www.glennbartley.com/natureph.../thepanpod.htm
Glenn this is a great capture. I've seen this behaviour many times before but I never got this close. I love the low angle that you've got. Were you standing in the water?
Very well done in every way. Great timing, good low angle, lovely light, and the behavior too. Only nit is maybe you could have gone to -0.7 to keep the whites a bit toned down. Great image.