Clannfear (Purple)

Clannfears are aggressive, quick, and dangerous Daedric creatures. They have a small frill, plated spikes on their spines, and a deadly tri-tipped tail. They are flock inclined—they will work together to bring down enemies—but they are still deadly individually. They have bird-like movements, but retain an almost brutish quality to their attacks.

Source: uesp.net.

This model is used for purple Clannfears summoned by the Summon Unstable Clannfear skill available to all Sorcerers.