Many waterbirds have webbed feet, so naturally footprints showing webbing are among the commoner types of footprint found. Often these may be in mud or wet sand close to water, or even in snow as the winter progresses. Different types of swimming bird produce different types of footprint. However, note that not all swimming birds have webbed feet. For instance, grebes and Coots have lobed rather than webbed toes, and Moorhens just have long toes without significant lobing. Most waterbirds with webbed feet have webbing between the front three toes. Cormorants and Shags, though have all four toes webbed, which make very distinctive prints. Some birds, including some waders, such as Avocet or Semipalmated Sandpiper have webbing or palmation only covering the basal half of the foot, with especially the middle toe having a significant unwebbed portion.