Barn swallow is the most widespread spices of swallow in the world.They are extremly agile in flight and spend most of their time flittering around us catching insects..Every year the bird moves 8300km from Argentina to Calfornia for their breeding by sea route.During this migration routes we have 6 levels and in each level help the Bird to overcome the problems that is facing.
Wowescape
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Oct 6th, 2018
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