Wow, we have been seeing LOTS of hummingbirds at our feeder. I don't know much about their migration, but they seem to be gathering and stoking up on food for the journey. We have one couple that lives and raises their young in our oak tree, but these are all sizes and many different colors. At first, the locals were on guard to protect their food source (our feeder), but they may have left. We are seeing a bunch of new ones. Pretty cool.