Some Kennings/Nicknames for Ravens (Contains No Jokes):
Basically, a Kenning is "a circumlocution used instead of an ordinary noun in Old Norse and later Icelandic poetry." To find out more about Kennings, why not have a little Wikipedia sesh
Here are my raven-based Kennings:
Nightmare Scavenger
Black Flyer
Poe's Prince
Sky Dot
Garden Scarer
Jet Beak
Tree Watcher
Death Box
Sleek Feather
Death Sender
Crow Seemly
Nought Fearer
Swoop Swiftly
Sky Dancer
Dark Bearer
Roof Dart
Nature's Sentinel
Bold Head
Brash Flank
Pitch Mystery
Uncanny Friend
Humble Egoist
That Bird
And that is enough of that.