Nice! Clover is good, however. It fixes nitrogen into the soil because it's a legume. It has deep roots and requires little water. The flowers provide lots of good stuff for bees (and maybe hummingbirds, too). Plus, clover is green, and you can't beat that in a yard.

You back and your bees will thank you if you let the clover grow!

Regardless, it's nice to have flowers. They do attract alot of activity! What kind of flower was the hummingbird visiting?