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,
Oliver (given name) "Oilibhéir", Scottish Gaelic "Oilvreis", Italian "Oliviero", Spanish "Óliver". The name was introduced to England by the Normans. It was commonly used in medieval England, but became rare after the Restoration, because of the unpopularity of Oliver Cromwell. The name was revived in the 19th century, possibly inspired by the title character of Dickens' "Oliver Twist" (1838). Pet forms of the English given name include "Ollie" and "Noll". In 2013 it was the fifth most popular name for boys in Australia. Oliver (given name) Oliver is a masculine given name of Old French origin; "Oliver" is one of Charlemagne's retainers in