The most common of the deinonychosaurs (with mattiraptors a close second), the draks are the unquestioned lords of virtually all medium-sized predator niches in Africa, Eurasia, and North America. Little different from their Cretaceous forebears, draks are often heavily-plumed and many bear the large teeth and relatively small sickle-claws that have lead some scholars to link them to Dromaeosaurus. However, other drak species lack these features, which may be convergent with this ancient predator. It should be noted that these species have not relationship to the real life species of dromaeosaur, Boreonykus. Their cries have been known to sound like "sea-gulls from hell".