Can anyone identify these hummers?

Barry Aronoff, a customer in Pasadena, California, who is also an excellent photographer, sent these shots along and wondered if I could help identify the hummer varieties. If you have any ideas, please share them with us. The best I could come up with is that the really beautiful one on the pine looks like it could be the Xanthus perhaps - apparently a little bit off its beaten path - it is listed as rare in Califonia - this may be very rare shot indeed! Here is a link for Xanthus: http://www.hummingbirds.net/xantus.html 

This shot isn't a hummer but is such a nice shot I thought it was well worth including anyway...