"Buteo", which described a type of hawk, was originally given to a member of the Fabia gens because such a bird on one occasion settled upon his ship with a favorable omen. This tradition, related by Plinius, does not indicate which of the Fabii first obtained this surname, but it was probably one of the Fabii Ambusti. Crawford suggests that the "buteo" of the legend was not a hawk, but a flamingo, based on the appearance of a bird resembling a flamingo on the coins of Gaius Fabius Hadrianus, who may have sought to associate himself with that family by the use of such a symbol. Hadrianus and his descendants form the last distinguishable family of the Fabii. Their surname was probably derived from the Latin colony of Hatria, and it is likely that they were not lineal descendants of the Fabii Buteones, but newly-enfranchised citizens. The flamingo might also allude to the family's coastal origins.