The hummers are stoking up for their migration. I don't have a feeder but I plant for them and see them all summer. Every September their numbers increase dramatically in my garden. I'm not sure, but I may be seeing some Anna's in addition to ruby-throated. Last year, a banded Anna spent the winter in a friend's garden a few blocks from here. It caused quite a stir among the local birders. I think somewhere way earlier in this thread someone mentioned their range is expanding. We tend to think of them as West Coast hummers.