What adaptation do birds have for moving?

Birds have several adaptations that facilitate movement, the most notable being their lightweight, hollow bones which reduce body weight without sacrificing strength. Their wings are specially adapted for flight, featuring a unique structure of feathers that allows for efficient aerodynamics and lift. Additionally, their powerful flight muscles, particularly the pectoral muscles, enable strong flapping and maneuverability in the air. Together, these adaptations make birds highly efficient and agile movers in their environments.