Birds fly into power lines because they have "blind spots" in their field of vision, according to new research. Vision experts found that cranes, bustards and storks were unable to see obstacles straight ahead when they tilted their heads downwards in flight.Birds often look down during flight to find fellow birds as well as nesting and feeding areas, say the researchers. The new evidence suggests that the problem cannot be prevented by altering the appearance of power lines.Read more...
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