Black-chinned Hummingbird	Black-chinned Hummingbird	Black-chinned Hummingbird	Hummingbird in flight	Hummingbird in flight
Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight
Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight
Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight	Hummingbird in flight
Hummingbird in flight	Calliope Hummingbird	Female Hummingbird	Calliope Hummingbird	Female Hummingbird
Female Hummingbird	Female Hummingbird	Female Hummingbird	Anna's Hummingbird	Female Hummingbird
Allen's Hummingbird	Broad-tailed Hummingbird	Anna's Hummingbird	Anna's Hummingbird	Female Hummingbird
Calliope Hummingbird	Ruby-throated Hummingbird	Allen's Hummingbird	Anna's Hummingbird	Anna's Hummingbird
Anna's Hummingbird	Broad-tailed Hummingbird	Allen's Hummingbird	Broad-tailed Hummingbird	Female Hummingbird
Broad-tailed Hummingbird	Female Hummingbird	Female Hummingbird	Allen's Hummingbird	Black-chinned Hummingbird
Black-chinned Hummingbird	Lucifer Hummingbird	Calliope Hummingbird	Blue-throated Hummingbird	Black-chinned Hummingbird
Black-chinned Hummingbird	Black-chinned Hummingbird	Broad-tailed Hummingbird	Blue-throated Hummingbird	Blue-throated Hummingbird
Broad-tailed Hummingbird	Broad-tailed Hummingbird	Hummingbird and Dragonfly	Hummingbird and Dragonfly	Ruby-throated Hummingbird
Broad-tailed Hummingbird

Hummingbirds (Trochilidae family) are small american birds with average length 3.5-4 inches (10-12cm) and weight 4-6g. The smallest bird in the world is the Bee Hummingbird (Mellisuga helenae) weighing only 1.8 gramm. Hummingbirds are well known because of their size and ability to hover in the air by rapidly flapping their wings, up to 80 times per second. The hummers are the only birds known to fly backward. There are about 320-340 species of hummingbirds in the world.

Did you know that

To defend its territory Allen's Hummingbird (Selasphorus sasin) will attack many birds, even large hawks. Rufous hummingbird (Selasphorus rufus) has similar aggressive behavior in addition to its curiosity: highly attracted to the color red (like most hummingbirds) it often examines humans, books, magazines etc. The smallest bird in USA, Calliope hummingbird Stellula calliope, prefer to make nests in the mountains and incubate eggs in the extreme cold. Anna's hummingbirds (Calypte anna) eat more insects and spiders than other hummers and their population is increasing thanks to these birds ability to adapt in suburban habitat. Broad-tailed hummingbird (Selasphorus platycercus) nests on the same tree branch or even built a new nest atop of old one year after year (so called philopatry - faithfulness to the home area).