Your Heron shot isn't coming up at the moment, but I did see it earlier in the week and really liked it. Living close to the Black River here in Lorain, we have a lot of Great Blues around, but they are -really- hard to get close to. What's kind of funny is just yesterday my wife and I took the canoe out on the lake at Findley State Park and saw several...in fact canoed right past two of them (less then 10 feet away). Unfortunately, we had all three dogs in the canoe with us and it was the youngest dogs first time in a canoe...even if I had a water box for the camera, it wouldn't have gone in the boat that trip...alas, more great Kodak moments lost forever (LOL!). Either way, it's amazing that I can get close to them out at the lake, but not around the corner at the river....
I also love the owl shot...great job working with the fence there. I know how hard shooting thru those fences can be and even on a good day, it usually takes away a little of your sharpness...yours looks very nice and crisp. Good job!
I like the black swan too, but I think I would have tried the polarizer...or at least shot it both ways. I know your 30D is comparable to my Rebel at the higher ISO's and on my Rebel, even ISO is very usable (and saved my butt at the wedding when my flash died!)...don't be afraid to push it a little
. It also looks like you were shooting down at the swan...over a fence maybe? You know me...I like that whole "eye level" thing, but that's just me.
Anyways, again great work!