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
Three-banded plover Three-banded plover The three-banded plover, or three-banded sandplover ("Charadrius tricollaris"), is a small wader. This plover is resident in much of eastern and southern Africa and Madagascar, mainly on inland rivers, pools, and lakes. Its nest is a bare scrape on shingle. This species is often seen as single individuals, but it will form small flocks. It hunts by sight for insects, worms and other invertebrates. Three-banded plovers have a sharp whistled "weeet-weet" call. The adult three-banded plover is 18 cm in length. It has long wings and a long tail, and therefore looks different from most other small plovers