Natures wonders:heaviest migration (Introduction)

by David Turell @, Saturday, April 06, 2013, 16:10 (2360 days ago) @ David Turell

Huge bustards fly 4,000 kilometers to escape Siberian winters:

http://www.newscientist.com/article/mg21829116.000-heaviest-flying-bird-makes-epic-jour...


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