I suposse you can use Falconer miniatures and combine them with some Reaper or Ral Partha familiars. While I wait for the official one, I am painting the following two:
combined with
and
with an owl
Sorry for the blurry pictures. The first one is from Midlam miniatures, and the second falconeer is from Ral Partha, a nice detailed mini. Hope it helps.