Nile crocodile stability and additional weight to sink in water, this bearing great probability over the theories that they assist in digestion and staving off hunger. However, Alderton (1998) stated that a study using radiology found that gastroliths were seen to internally aid the grinding of food during digestion for a small Nile crocodile. Herodotus claimed that Nile crocodiles have a symbiotic relationship with certain birds, such as the Egyptian plover ("Pluvianus aegyptius"), which enter the crocodile's mouth and pick leeches feeding on the crocodile's blood, but no evidence of this interaction actually occurring in any crocodile species has been found, and
Oriental plover of the oriental plovers that make the long journey south overwinter in Australia and it has been estimated that there may be 160,000 individuals of this species. With a large range and no evidence of significant population decline, this species’ conservation status is rated by the IUCN as being of Least Concern. Oriental plover The oriental plover ("Charadrius veredus") also known as the oriental dotterel, is a medium-sized Charadriine plover closely related to the Caspian plover. It breeds in parts of Mongolia and China, migrating southwards each year to spend its non-breeding season in Indonesia, New Guinea and northern Australia.