Fig. Markus Markus unsold unsold
flock of birds in the sky forming a formation in the shape of the letter “V” is a common sight. Until now, scientists have wondered, with this formation is apparent. Solving the puzzle, as often happens in science, came by accident, when the project for completely different purposes.
all started with ibises maned. These migratory birds once lived in Europe, but were out of it due to excessive hunting. Group of Austrian naturalists decided to bring back ibises.
Case was not simple, because migrating birds have to re-learn how to navigate the respective routes. To achieve this, the Austrians podczepili group brought ibises flight monitoring equipment, including measuring the frequency of wing beats, heartbeat rate etc.. Birds have to fly to the set route, following the drone equipped with a light.
readings from the apparatus shown that flying flock in formation, birds wings hit less often, and their hearts beat slower than when flying alone. Formation “V” so I had to have something to do with saving energy. I had – turned out to be a very complex system. – Birds apparently are aware of the position of his companions in the herd and on the basis set out in the best possible position – says Dr. Steven Portugal, one of the scientists conducting the study. Where is the best possible position? Just behind the leading bird flock around the end of its wings. – This is how to retain the air swirling past a flying bird. Position in the line leading bird is disadvantageous because the movement of the wings there sloping generates an airflow which ?ci?ga?by another bird down. At the end of the wing, however, the air flow is rising, because his companions on the right and on the left side may benefit from it, putting in flight less effort – explains Dr. Portugal. Readings also showed that in order to achieve maximum economy flight birds are able to synchronize the shock wings.
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