Hummingbird is a small bird of the Trochilidae family. The rapid beating of the hummingbirds wings (60 to 80 beats per second) makes the distinctive humming sound from which the hummingbird gets its name. Hummingbirds are the world’s second largest family of birds with an estimated 328 species. Despite the fact that they are found only in the New World (North, South, and Central America; and islands of the Caribbean), they are a familiar subject around the globe. Yet few in the world are aware that twenty-eight (28) species, or nearly ten per cent, are threatened with extinction, according to an analysis by BirdLife International.

Reference : Wikipedia

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