Hummingbird--video clip 3-[Post note: probable Black-chinned]

[POST NOTE: I have requested and received feedback from several members of the Texbird listserve, including those with considerable experience and expertise, that all agreed this is not an Ann's Hummingbird. They all also agreed that it is, or it is suggestive of, a Black-chinned Hummingbird.]
This clip provides a good and close view of the hummingbird's back. SeEtta