Crocodile bulks of swallowed prey flesh and bone. Many large crocodilians swallow stones (called gastroliths or stomach stones), which may act as ballast to balance their bodies or assist in crushing food, similar to grit ingested by birds. Herodotus claimed that Nile crocodiles had a symbiotic relationship with certain birds, such as the Egyptian plover, which enter the crocodile's mouth and pick leeches feeding on the crocodile's blood; with no evidence of this interaction actually occurring in any crocodile species, it is most likely mythical or allegorical fiction. Since they feed by grabbing and holding onto their prey, they have evolved
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.