An aquatic bird is a type of bird that has adapted to living in or near bodies of water. These birds have specialized features that enable them to thrive in aquatic environments, such as webbed feet for swimming and waterproof feathers for buoyancy and insulation. They often have long legs for wading, slender bills for catching fish, and streamlined bodies for efficient swimming. Aquatic birds can be found in various habitats, including oceans, lakes, rivers, and wetlands, and they play important roles in their ecosystems as predators, prey, and indicators of environmental health.