Great Blue Herons are pretty common birds. I can find them year round in Virginia, so seeing them in Florida is never really a priority. But they are such good subjects for photography. They are large, so you don't have to worry much about being too far away. And, they are usually very still or slow moving, so you don't have to fight to keep them in frame or focus.
I like this photo of a Great Blue Heron. He looks a bit wind blown, and that yellow eye makes him look a bit grumpy.