Hummerbird At Feeder

This is one of our humingbirds that comes to our hummingbird feeder. Overall, I've counted 4 different hummingbirds. One is all green, one is green with a white head, one is grey andone is green and much smaller than the others. This one is, of course, the grey one... I also don't want to mention how many days I attempted to get this picture :) Hopefully I will be able to get more. They usually come 8-10 times per day.