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Also, I found this link yesterday: http://fieldguidetohummingbirds.wordpres...
From the photos I posted, there is no way to actually distinguish between the two species - need a clear photo of the flared tail feathers to tell adult males apart, females and juveniles are nearly impossible to distinguish. Didn't know that when I posted the spotting; at least we can confirm it is one of the two.
The first photo is of the male Allen's Hummingbird and the other 2 are of the female Allen's Hummingbird. Read more about them at the link I gave above.