Help with Hummer ID (1 Viewer)

Hummers are SO hard to identify!

New at my feeder today (hope s/he stays around, unlike the Rufous Sabrewings that visited for a few weeks and then were gone). Medium size - a bit bigger than a White-Eared, not as big as a Magnificent. Green on top, blue underneath; noticeable blue auricular patches (which I did NOT see as violet); brilliant cobalt belly; darker blue undertail; long, all-black bill; light vent and untacs; rounded tail, not especially wide. Not a Broad-Tailed nor a Doubleday due to black bill and tail definitely NOT notched. My only guess at this point is Green Violet-Ear, but the tail is rounded and not square, and I didn't see any violet on the bird (and I got several sustained looks within a meter in bright sunlight).

Today, on my patio in an urban area adjacent to rural area with small farms, undeveloped woods and mountainsides. Quetzaltenango, Guatemala, 8500 ft/ 2300 mts.

Thanks! I got three pretty good pics, one shows the undertail in detail.

Definitely Green Violetear. Iridescent colors are changeable, but colors in bird names are often untrustworthy. In this case, the group name isn't appropriate for all its members. Brown Violetears do have violet ears, but Green and Sparkling have violet-blue ears and White-vented's are more magenta. The square tail shape is made up of feathers that are rounded at the tip.

Thank you! I got confirmation from a friend, too, and seeing the bird again in brighter sunlight I was able to id the key field marks (band on tail,"ears" look purplish in the right light). Appreciate the help!

Hope it becomes a regular at your feeders!

So far it is. Such a stunning bird!

Lucky you!!!