Flexi Says: Birds wings have specific shape, they are thicker at the front compared to back. When the birds flap the wings, it creates a low pressure above the wings and higher pressure below the wings. This helps the bird's body to be lifted in upward direction. Wings of the birds also have ability to twist and allow the bird to propel itself in different directions. Birds that fly have a bony ridge along the breastbone that the flight muscles attach to. This allows them to remain stable in the air as they fly
