Marsh wading birds are a type of bird that inhabit wetlands, such as marshes, swamps, and shallow bodies of water. Herons are a common type of marsh wading bird, and are easily recognizable by their long legs and necks. They are typically found in areas with abundant food sources, such as fish, frogs, and insects. Herons can be found in many parts of the world, including North America, Europe, Asia, and Africa.