Aves, commonly known as birds, are warm-blooded vertebrates characterized by feathers, beaks, and the ability to lay eggs. They belong to the class Aves and are found in diverse habitats around the world, from forests to deserts and oceans. Birds have adapted to various environments, leading to a wide range of species with different sizes, colors, and behaviors. Birds are known for their unique adaptations for flight, including lightweight bones and powerful muscles. Most species possess a keen sense of sight and can communicate through songs and calls. Birdwatching is a popular hobby that allows enthusiasts to observe and appreciate the beauty and diversity of birds in nature.