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
European golden plover to North Africa. In the United Kingdom, golden plover chicks rely on Tipulidae for feeding, while in Sweden Bibionidae are more important. The European golden plover's call is a monosyllabic, slightly descending, melancholic "tuu". Its flight action is rapid and powerful, with regular wingbeats. The European golden plover spends summers in Iceland, and in Icelandic folklore, the appearance of the first plover in country means that spring has arrived. The Icelandic media always covers the first plover sighting, which in 2017, took place on March 27, 2017. On 10 November 1951, Sir Hugh Beaver, then the managing director of the