I like the design. Gives off a disturbing Vulture-like feel while remaining alien. Reminds me a bit of some of Tzeentch's or Slaanesh's enhancements from W40K. I like the touch though of how presumably the torso is bald of feathers. It removes the atypical monster bird feel, and makes it seem more daemonic.
This is beautiful! The talons are amazing, I love the shape of his leg and the feathery fluff on them. The details on the face are fantastic as well. I haven't seen a creature as awesome as this in a while.