If you want to do one more thing to help the environment and also have a beautiful garden, you may like to plant a wilderness garden. Wildflowers are 4 times more attractive to pollinators such as bees, hummingbirds and butterflies.
One of the butterflies you may see in your garden is the Monarch butterfly. Here is a wonderful PBS video of a swarm of Monarch butterflies in Mexico. The film was taken using a spy hummingbird camera!