I shoot with a Canon 40D and a canon 100-400mm L lens with image stabilization.
I was a photographer before i got into birding and i quickly realized you need all the zoom you can afford.
The third hawk pic is actually using a Canon S3 IS point and shoot camera. It has a really good zoom on it. I didn't have my
big camera that day so i used my dad's camera it had just grabbed a bird out of my moms feeder