There are at least two Green Herons (Butorides virescens) who lurk along my section of the Tuolumne River where I walk most mornings. I've been observing them for three years now, but pictures are a bit rare because they tend to flush as I walk by on the trail. They're usually flying overhead.
I took an "establishing shot" and as I looked at it later, I realized how lucky I was to spot it. Can you see it in the picture below?