Due to the small size of their prey, the greater flamingos (Phœnicopterus roseus) spend most of their time foraging. With their heads totally or partially submerged, they trample the ground by quickly bending their long webbed legs and rotating their bodies around their beaks. This particular movement allows flamingos to dig the sand or mud in order to unearth the small invertebrates that live in the ground and constitute the basis of their diet.