There were some in my area; at first not near me but last year there was a nest not too far away along the river. I can't remember what time of year it was, last time I was out that way there wasn't anything happening.
I've seen people with tripods set up but can't remember when it was, I'll have to ask my best friend this weekend if she remembers. Obviously there was action near the nest, and it seems like it was late afternoon maybe? But people could've been out there with their tripods all day for all I know! lol