It looks to me most like the subadult male ruby throat on page 299 of
Sibley Guide to Birds.

At 09:53 AM 9/10/2004, David Russell wrote:
>The report of a potentially interesting hummingbird came from a sharp-eyed
>observer (David Hysell) at his feeder yesterday. I have enclosed a couple
>pictures. What do you think the age, sex, and species of this bird
>is--(don't be afraid to say Ruby-throat), support your identification.
>Dave
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