Si les 9000 espèces d'oiseaux recensées sur Terre sont dotées d'ailes leur permettant de chasser, de migrer ou d'élaborer des tactiques de survie face aux prédateurs qui les entourent, elles adoptent des stratégies différentes dans leur manière de voler. Démonstration avec l'hirondelle, le manchot ou l'aigle pêcheur.
Ci sono oltre 9.000 specie di uccelli sul pianeta, diversi per dimensione, forma e colore. Il film ci porta alla scoperta del mondo alato e delle sue eccezionali peculiarità.
More than 9,000 types of birds have been identified on earth. They are often very different in size, shape, and color, but all have developed the same evolutionary strategy: 160 million years ago, the front limbs of these reptile descendants transformed into wings, and the avian creatures took to the skies.
