While some naturalists enjoy identifying bird species based on their footprints, many residents deem bird tracks irritating and unattractive. Most nuisance birds, such as pigeons and starlings, leave prints with three forward facing toes. Woodpeckers are unique with two forward facing and two backward facing digits, built for climbing trees. Water bird tracks, like those from ducks and geese, can be quickly identified by the webbing seen between their toes.