A corvid is a bird. Corvid is the name of the family of birds that includes the crows, ravens, rooks, magpie, jays, jackdaws, and others.
More to the point, they are a totem for the college. They are diversely social without being hierarchical: no alpha birds. They enjoy play and leisure as well as being crafty food-gatherers. They may be the most intelligent birds, with a mind that can string together causes to obtain a distant goal (they are not just simple tool-users). They know loyalty as well, and bond into lifelong pairs, but their social groups include unbonded singles. Besides, they clean up our roadkill.
Can't think of a being that is a more appropriate model!