Yeah, I'm in south surrey near crescent park. I am pretty sure the park has a healthy population of hummers that stay over the winter. I've seen some fluffed up looking Annas too, but no rufous or black chins. They keep coming around even when the feeder is frozen solid....they lick the ice! I was blown away to see a costas though.... a nice treat. I'd asked at wild birds about taking the feeders down, they said to leave them up, and that if the birds were going to leave they would leave regardless of whether there were feeders out and that a good number of hummers do end up wintering here. Go figure!
*edit... actually i think it IS an annas after looking at the sibley guide. Sometimes the illustrations are better for picking out the iconic parts.