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,
John (given name) Yônāṯān, which means "Gift from YHWH" and thus is a longer version of Nathan. John (given name) John is a common masculine given name in the English language of originally Semitic origin. The name is derived from the Latin "Ioannes" and "Iohannes", which are forms of the Greek name "Iōannēs" (), originally borne by Hellenized Jews transliterating the Hebrew name "Yohanan" (), "Graced by Yah", or (), "Yahweh is Gracious". There are numerous forms of the name in different languages; these were formerly often simply translated as "John" in English but are increasingly left in their native forms (see sidebar).