What A Hummer

I placed the feeder on the table again in an effort to get a up close picture of a hummer.  This was when I was still using my compact camera.  (This is a catch up blip) I got pretty lucky as this cute little girl decided she wasn't afraid of me after buzzing by a few times.

I'm not quite sure what kind of hummingbird this is.  I know it's a female, probably a Black-chinned.  I'm beginning to doubt some of my identifications lately because so many of the females look alike.  I found a new source with a lot more detail to help me with IDs and I'm going to do some studying.