I took this at Andrew Hayden Park in Ottawa, Canada this summer. First time I've ever seen one. He let me follow him for 1/2 hr along the rivers edge.
Canon 40D
AV mode
f/ 6.3
1/500 sec
ISO 125
400 5.6 lens
Neat shot. I like how you caught the tongue out. The clarity is excellent. On my monitor I lose a little of the shadow detail on the back part of the wing. I'd be tempted to try to de-emphasize the bg by darkening it significantly. I would maybe also try to darken the rock he is standing on. Just my 2 bits. Good work.