Birds are a group of vertebrate animals characterized by having feathers, wings, and the ability to fly. They are endothermic, which means they regulate their body temperature, and their light skeleton allows them to fly efficiently.
Birds have a horny beak, legs adapted for walking, jumping, or swimming, and lay eggs. They are known for their diversity of shapes and colors, from tiny hummingbirds to large eagles.
Birds play a vital role in ecosystems as pollinators, seed dispersers, and pest controllers, and are appreciated for their beauty and song.
