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,
Andromeda Chained to the Rocks painted women as he saw them; naturally imperfect and flawed. Rembrandt's subsequent nude mythological paintings from this period "Diana Bathing" and "Danaë" show his evolving portrayal of the nude. Andromeda Chained to the Rocks Andromeda Chained to the Rocks (1630) is a 34 x 25 oil on panel painting by the Dutch Golden Age painter Rembrandt. It is now in the Mauritshuis, The Hague, Netherlands. Andromeda represents Rembrandt's first full length mythological female nude history painting and is taken from a story in Ovid's "Metamorphoses". In Metamorphoses, Andromeda (mythology) is the daughter of an Ethiopian king and queen, Cepheus and