Creature of the day: The Crow "Corvidae" 🐦‍⬛🐦‍⬛🐦‍⬛ Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. In colloquial terms, the crow family is made up of corvids; currently 139 species are included. The genus Corvus containing 50 species makes up over a third of the entire family. The raven is the largest passerine bird. Corvids display remarkable intelligence for animals of their size