Sunday, 19 May 2013

A humming bird flaps its wingsup to 90 times in one second or over 5000 times a minute.

Photo: A humming bird flaps its wingsup to 90 times in one second or over 5000 times a minute. Keep sharing Visit us: www.knowledge93.blogspot.com

A humming bird flaps its wingsup to 90 times in one second or
over 5000 times a minute.
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