-1 echoes of the beast (no special ability, though Johann makes occasional use of this form's echoes in human form anyway - being able to ask the local corvids questions can come in quite handy.)
-1 claws
-1 wings
-1 diminutive size
-2 inhuman speed
-4 supernatural recovery
+3 catch
-1 clever bird: +2 deceit to convince observers that this is clearly just a particularly clever corvid; there's nothing supernatural about, say, a raven using a vending machine.  Nope, nothing at all.  Unusual?  Perhaps.  Worth taking a cell phone photo of if you're fast enough?  Sure.  Supernatural?  Nope.
-1 paranoid? probably: +2 alertness vs. ambushes
-1 refresh deliberately not spent

(unspent: +1)
+5: scholarship, alertness, investigation
+4: athletics, empathy, lore
+3: conviction, presence, rapport, fists
+2: stealth, deceit, discipline, survival
+1: performance, contacts, endurance, might

details on individual forms:
Plain old black raven, 1x each male & female
Magpie, 1x each male & female