Blue-throated Mountaingem

A fairly large hummingbird, reaching 11.5 to 12.5 cm (4½ to 5 inches) in length and 6 to 10 grams in weight. The Blue-throated Hummingbird is dull green on the top of its body, fading to medium gray on its belly. It has a conspicuous white stripe behind its eye and a narrower stripe extending backward from the corner of its bill, bordering a blackish cheek patch. Its tail feathers are iridescent blue-black with broad white tips on the outer two to three pairs.