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
Collared plover coasts and river shores or islands, or inland, often next to low cover, such as tufts of grass. The clutch is two pale buff eggs, spotted with brown. Like many ground-nesting species, adults perform a broken-wing display to lure presumed threats away from their nest and young. Collared plover The collared plover ("Charadrius collaris") is a small shorebird in the plover family, Charadriidae. It lives along coasts and riverbanks of the tropical to temperate Americas, from central Mexico south to Chile and Argentina. This small plover is long and weighs . Its upperparts are brown and the underparts white in