Projection onto glass roof with long loop of film.
'That skylight you had in your studio... a film or a performance that you did called? In my mind I've got an image of a broken window pane, up top. It had something to do with an image of a bird. Like a still almost.'
'You projected the shadow of the bird onto the roof and it looked like the bird was flying around outside, as if it was daylight. It was like when a bird flies over a glass roof and you see the shadow of it flying across.'
extract from recordings of film makers 'Early Years of the Film Co-Op' (1978)