You probably know that ravens are larger, the size of a Red-tailed Hawk. Ravens often travel in pairs, while crows are seen in larger groups. Also, watch the bird’s tail as it flies overhead. The crow’s tail feathers are basically the same length, so when the bird spreads its tail, it opens like a fan. Ravens, however, have longer middle feathers in their tails, so their tail appears wedge-shaped when open.
Listen closely to the birds’ calls. Crows give a cawing sound. But ravens produce a lower croaking sound. A raven's strut is often punctuated by a few two-footed hops. While crows caw and purr, ravens croak and scream bloody murder. Ravens ride the thermals and soar, whereas crows do more flapping. Also, as mentioned in the podcast, the raven's tail resembles a wedge, compared to the rounded fan-like shape of the crow's. Ravens have bigger, curvier beaks relative to crows. While both species have bristles at the base of the beak, the raven's are noticeably longer. Its throat feathers are also quite shaggy.