I want to build the next adventure site around a unique, bespoke enemy, so I am going to roll one up! (see page 190 of the SD rules)
Combat = d20 = 9 = PL (party level) = LV 3
Quality = d20 = 2 = Avian
Weakness = d20 = 10 = Silver
AC 13, +3 beak, 1d8 damage.
Now let's mutate it! (page 191)...