Very likely an Anna's. They are the most common west coast hummer and have the most northerly year round range, well into BC. They also rely on insects and arachnids more heavily than most other hummers, which keeps them fortified in more northern climes with less winter nectar sources. Still, a good idea to keep the feeder full until you know for sure no more around. I have seen them perched on my feeders in the middle of snowstorms! They are permanent residents in my garden :-)