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
Pacific golden plover plover then has a yellowish face and breast, and white underparts. It is similar to two other golden plovers: the Eurasian and American plovers. The Pacific golden plover is smaller, slimmer and relatively longer-legged than the European golden plover, "Pluvialis apricaria", which also has white axillary (armpit) feathers. Overall, the Pacific golden plover is found to be more similar to the American golden plover, "Pluvialis dominica", with which it was once considered conspecific as "lesser golden plover". The Pacific golden plover is slimmer than the American species, has a shorter primary projection, longer legs, and is usually found to have