Brent- Great photos!
I just saw my first hummer of the season this morning- how serendipitous! The ones we have here are as Purza described, the ruby throated ones with a green body, really pretty.
I have a trick for the ants Momz- vaseline or any petroleum jelly. Ants hate it, and if you smear some on the top of your feeder or anywhere the ants might access it they won't cross the vaseline line. I had the same problem until I read the tip somewhere last year and tried it- it really does work. Saves work too, from having to clean the dang piss ants out of the feeders!
I've read that if you have more than one feed you should put it in a place that is out of sight of any other feeders, that way the birds don't get so agitated over the other hummers in the area.
-Potential