Range. - -Mountains of central Mexico north to southern Arizona and New Mexico.
The throat of this species is a rich metallic blue; otherwise the plumage is greenish above and below, being brighter and more irisdescent on the breast. They are not uncommon on the ranges of southern Arizona, where they have been found nesting in July and August, their nest not being unlike those of the Rufous Hummer, but with the exterior largely composed of shreds of grayish bark and lichens. Their eggs are like many others of the Hummers.
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