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
Forbes's plover Forbes's plover The Forbes’s plover or Forbes’s banded plover ("Charadrius forbesi") is a small wader. This plover is resident in much of west Africa, mainly on inland rivers, pools and lakes. Its nest is a scrape lined with small pebbles in rocky uplands. After breeding in the wet season, this bird moves to open grasslands, including airfields and golf courses, in the dry season. It is sometimes seen at pools or reservoirs. The adult Forbes’ plover is 20 cm in length. It has long wings and a long tail, and therefore looks different from most other small plovers in flight,