- Place
- a tall source room connected by suspended walkways and points of reflected blue light
- Affordance
- the walkways form a sequence of observation perches
- Camera
- vertical architectural view through the walkway network
- Living subject
- an anatomically natural raven
- Day behaviour
- moving along the lowest walkway rail
- Night behaviour
- watching from the uppermost rail among reflected lights
- Palette
- lapis blue, midnight navy, ivory, cyan glass and restrained gold
- Materials
- lapis and cobalt glass tesserae, ivory stone, black marble and gold leaf smalti