Denver Zoo birds, part 2!
Alright, so with Titus Lunter's Cinder Barrens showing us the Scarab God's pre-Bolas Seth-animal head, I believe the Scorpion and Locust gods must have had ram and hawk heads, respectively. The Locust God would have needed a flight-capable body, and Scorpion's stature and head-smashing through the Gate recall minotaurs. The Scarab God was the only one that had me stumped, but now we have official unofficial confirmation. : )