Check out these Bird Tattoos photos:

Harrier and Jaguar
Bird Tattoos

Image by failing_angel
The current 2010 Duveen Commission, by Fiona Banner.

The suspended Sea Harrier transforms machine into captive bird, the markings tattooing its surface evoking its namesake the Harrier Hawk. A Jaguar lies belly up on the floor, its posture suggestive of a submissive animal. Stripped and polished, its surface functions as a shifting mirror, exposing the audience to its personal reactions. Harrier and Jaguar stay ambiguous objects implying both captured beast and fallen trophy.
[From the Tate site]

Each planes are de-commissioned fighter planes.
The Jaguar has been polished, the Harrier painted with feathers.

Jaguar
This particular plane is Sepecat Jaguar XZ118.
1st flight in 1976, decommissioned in 2006.

The SEPECAT Jaguar is an Anglo-French jet ground attack aircraft, used by the RAF until 2007.