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 take the names as divisible. In regions where fortune-telling is more popular, many parents may name their children on the advice of literomancers. The advice are often given based on the number of strokes of the names or the perceived elemental value of the characters in relation to the child's birth time and personal elemental value; rarely on the sound of the name as there is no system of fortune-telling based on character pronunciations. In jurisdictions where it is possible, people may also choose to change their legal given name, or their children's names, in order to improve their fortune.