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
Grey plover Grey plover The grey plover ("Pluvialis squatarola"), known as the black-bellied plover in North America, is a medium-sized plover breeding in Arctic regions. It is a long-distance migrant, with a nearly worldwide coastal distribution when not breeding. The genus name is Latin and means relating to rain, from "pluvia", "rain". It was believed that golden plovers flocked when rain was imminent. The species name " squatarola" is a Latinised version of "Sgatarola", a Venetian name for some kind of plover. They are long with a wingspan of and a weight of (up to in preparation for migration). In spring and