Thomas of Cantimpré [circa 1200-1272 CE] (Liber de natura rerum, Birds 5.70): The kym is a large bird, as Aristotle says, that lives on its prey. It is of good plumage and of good character, enduring much against adverse birds. With much care and diligence she feeds and nurses her young, and not only her own, but also the young of a very bad kind of eagle, which drives out its young before the proper time due to the fatigue of nursing them [also said of the coot and the vulture]. - [Badke translation/paraphrase]