High Quality Content by WIKIPEDIA articles! Flight is the main mode of locomotion used by most of the world's bird species. Flight assists birds while feeding, breeding and avoiding predators. This article discusses theories on the evolution of bird flight. The mechanics of bird flight is covered, with emphasis on the varied forms of bird's wings. The specifics of hovering, take-off and landing are also examined. Finally, additional adaptations of bird's bodies relating to their flying ability are covered.