Hi bcbird. I'm in BC, too.
I'm not qualified to answer your questions, but I'll let you know what I think, and then if I'm wrong, The Peregrine Chick (Tracy) can correct us both!
I think Trey hangs out close by, either on the Radisson sign or somewhere else very close (if he's not with the chicks, that is, and seeing as it's windy tonight, he won't be!)
I was wondering about feeding at night, too, but as they don't fly at night, I don't think they do feed at night (unless there's a secret stash left during the day for midnight raids on the 'fridge'!)
well, now we'll have to wait and see if TPC corrects us and/or adds more detailed info...