Well done, a nice capture of a Hummer in flight. I like every thing about it. To nit pick, I would remove extra catch light & add to bg in front of your lovely photographed bird.
Jack, you already heard from the "crop police" (thanks, Gus!). You have a very nice HA and good details from head to toe. The wing blur doesn't bother me because these little ones are lightning fast. I do think the wing position is a bit of a killer, though. Getting it up or down and not midway are the strongest options as they give us a clearer view of that front wing. If you're not shooting in burst mode you might give that a try so you can choose the best of the 20 as he goes by.
Also, you have a clone remnant (looks like a diagonal line right behind the head and moving to the BG) that needs to be smoothed over. One good lesson is to always clone twice...one at full strength and one at 50% to make sure the BG gets well blended and no remnants remain.
Very nice work on the hummer...keep it up if the opportunity presents itself!
You did a good job in photographing the hummer in flight. If you are using CS5, the new Content-Aware is magic, and will take out a feeder seamlessly. If remenants are left they also can be removes easity. If you don't have CS5, I would rather cover a feeder using Quick Mask than cloning. Robert OToole has a great CD, Aptats1 that is sold on Artie's website and is very easy to understand. He also has Aptats2 now for sale.