Bohaiornithidae of sexual dimorphism, with the feathers being used by male members of a species for courtship display. A subadult specimen of an indeterminate bohaiornithid described in 2017 preserved feathers on various parts of the head and body which were analyzed and determined to have been iridescent in life. A referred adult specimen of "Bohaiornis" was preserved with a several rocks concentrated in the stomach region. Rocks in the stomach of birds and other animals are often believed to be gastroliths swallowed to assist in the digestion of plant material. However, the rocks apparently swallowed by this specimen are much larger,
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