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
Red-capped plover Red-capped plover The red-capped plover ("Charadrius ruficapillus"), also known as the red-capped dotterel, is a small plover. It breeds in Australia. The species is closely related to (and sometimes considered conspecific with) the Kentish plover, Javan plover and white-fronted plover. Red-capped plovers have white underparts and forehead. Their upperparts are mainly grey-brown. Adult males have a rufous or reddish-brown crown and hindneck. Adult females have a paler rufous and grey-brown crown and hindneck, with a pale loreal stripe. The upperwing of "Charadrius ruficapillus" shows dark brown remiges (flight feathers) and primary covert feathers with a white wingbar in flight. Its