How do we keep the bees from driving the hummingbirds away?

Hi Donna, I've never had this problem but here's an article that might help. http://www.birdsandblooms.com/birding/attracting-hummingbirds/keeping-bees-away-from-hummingbird-feeders/

It could be the solution has too much sugar in it. Mix a 1:4 ratio of sugar to water and see if that helps, Donna.

You need to use a feeder that has ant and bee guards. Once the bees can no longer get to the food they will give up. Don't put you feeders close to a flowering plant that the bees are heavily feeding at.

I use the bee guards, and have the majority of bee friendly flowers in the front yard, and just plants near the hummingbird feeder.