Their ability to fly has fascinated us for thousands of years. All birds, even water birds like penguins, have these lightweight structures. IN fact, birds are the only creatures in the world with feathers. Every bird, including flightless and semi-flightless birds like ostriches, penguins, and peacocks has wings. The wings on flightless birds are just not strong enough for doing what no other animals besides a bat can do.
Most birds can fly.
Birds have many amazing adaptations to help them with this amazing feat. They also have extremely powerful chest muscles that stretch from their well-developed breastbones to their wings to help them flap those wings. Birds eat a wide variety of foods from fruits and vegetables to worms and insects to seeds and nuts, but they don't have teeth to chew those foods. Instead, birds have beaks or bills that are specialized for the types of foods they eat. Birds of prey like hawks and eagles that eat rodents and other small animals have special hooked beaks for picking and tearing meat.