Humming bird

Hummingbirds are tiny birds with long, thin bills. The bill, mutual with an extendible, bifurcated tongue, allows the bird to provide for upon nectar deep within flowers. The inferior (mandible) can flex downward to make a wider bill opening; this facilitates the imprison of flying insects in the mouth rather than at the tip of the bill.

The Bee Hummingbird (Mellisuga helenae) is the smallest bird in the world, weighing 1.8 g (0.06 oz) and measuring concerning 5 cm (2 in). A typical North American hummingbird, such as the Rufous Hummingbird (Selasphorus rufus), weighs about 3 g (0.106 ounces) and has a length of 10–12 cm (3.5–4 inches). The largest hummingbird is the Giant Hummingbird (Patagona gigas), with a number of weighing as much as 24 g (0.85 oz) and measuring 21.5 cm (8.5 in).

Most species show conspicuous sexual dimorphism, with males brilliantly colored and females displaying cryptic coloration. Iridescent plumage is there in both sexes of most species, with green being the most frequent color. Highly modified structures within convinced feathers, usually concentrated on the head and breast, create intense metallic iridescence