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
Malaysian plover may be exacerbated by density-dependent reductions in productivity." Malaysian plover The Malaysian plover ("Charadrius peronii") is a small (c. 35–42 g) wader that nests on beaches and salt flats in Southeast Asia. The Malaysian plover is 15 cm (5.9 in) in length. The male can be recognized by a thin black band around the neck; the female has a thin brown band. Its legs are pale. Its voice is a soft "twit". The Malaysian plover lays two to five (mode of three) cryptic eggs on small scrapes on beaches. The eggs are incubated by both the male and female for