Physiology of dinosaurs and that this was a feature they shared with birds. In 2007 Oliver Wings reviewed references to gastroliths in scientific literature and found considerable confusion, starting with the lack of an agreed and objective definition of "gastrolith". He found that swallowed hard stones or grit can assist digestion in birds that mainly feed on grain but may not be essential—and that birds that eat insects in summer and grain in winter usually get rid of the stones and grit in summer. Gastroliths have often been described as important for sauropod dinosaurs, whose diet of vegetation required very thorough digestion, but
Chinese given name When speaking of non-family social acquaintances, people are generally referred to by a titlefor example, "Mister Zhang", "Mother Li" or "Chu's Wife". Personal names are used when referring to adult friends or to children and are typically spoken completely; if the given name is two characters long, it is almost never truncated. Another common way to reference someone in a friendly way is to call them "Old" (, "Lǎo") or "Little" (, "xiǎo") along with their surname. Many people have a non-Chinese name (typically English) in addition to their Chinese names. For example, the Taiwanese politician Soong Chu-yu is also