![Source :
www.en.wikipedia.org/wiki/Hummingbird
Hummingbirds are birds comprising the family Trochilidae. They are among the smallest of birds, and include the smallest extant bird species, the Bee Hummingbirds. They can hover in mid-air by rapidly flapping their wings 12–90 times per second (depending on the species). They can also fly backwards, and are the only group of birds able to do so.[1] Their English name derives from the characteristic hum made by their rapid wing beats. They can fly at speeds exceeding 15 m/s (54 km/h, 34 mi/h) All Rights Reserved Agata Jelen 2010](http://25.media.tumblr.com/tumblr_kzz3ww3ZQA1qa1j93o1_500.jpg)
Source :
www.en.wikipedia.org/wiki/Hummingbird
Hummingbirds are birds comprising the family Trochilidae. They are among the smallest of birds, and include the smallest extant bird species, the Bee Hummingbirds. They can hover in mid-air by rapidly flapping their wings 12–90 times per second (depending on the species). They can also fly backwards, and are the only group of birds able to do so.[1] Their English name derives from the characteristic hum made by their rapid wing beats. They can fly at speeds exceeding 15 m/s (54 km/h, 34 mi/h) All Rights Reserved Agata Jelen 2010
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