Mimicry. The dire raven can mimic simple sounds it has heard, such as a person whispering, a baby crying, or an animal chittering. A creature that hears the sounds can tell they are imitations with a successful DC 10 Wisdom (Insight) check.
Ooh Shiny. The dire raven has sharp eyes for shiny things. If searching for, or with a chance to see something particularly shiny the dire raven rolls a Wisdom (Perception) check at advantage. If making general Wisdom (Perception) check the advantage only applies to things that fit the description, and if there is such a thing the dire raven will take the lower score for it's general search, getting distracted by what it hopes to make its own. If the general search does not yield any shiny things then use the first roll whether it better or worse.
Beak. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 piercing damage.
Talons Melee Weapon Attack: +2 to hit, reach 5ft., one target. Hit: 2d6 slashing damage.