Distribution / Range
The Blue-throated Hummingbirds winter in the mountain woodlands of Mexico, following the highlands and central plateau as far south as Oaxaca.
For the breeding season, they will migrate to the mountain canyons of southwestern United States, including southern Arizona, southern New Mexico and western Texas.
The Blue-throated Hummingbird is a fairly large hummingbird, measuring 11.5 to 13.5 cm (4.5 to 5.25 inches) in length and weighing between 6 to 10 grams. Their wingspan is typically 79 mm (3.1 inches) for males and 68.5 mm (2.3 inches) for females (Johnsgard, 1983; Howell, 2002).
The upper plumage is dull green, fading to a medium grey on the underside. It has white stripes behind the eyes and a narrower stripe extending backward from the corner of its relatively short bill, next to a blackish cheek patch. The tail feathers are iridescent bluish-black with broad white tail with white tips on the outer most tail feathers.
The male has an iridescent blue throat patch (gorget), which may appear black or grey color in poor light.
The female's throat is grey. Otherwise males and females look quite similar.