AT FIRST sight, this free exhibition of work by Jon Buck gives the impression of an archaeological find.

Intriguing bronze artefacts — evidently not utilitarian — appear to be coloured by some unknown natural process. They’re covered with glyphs reminiscent of Celtic symbolism but which are actually undecipherable.

A clue to their meaning is found in Buck’s younger days when he worked as a bird-keeper at Bristol Zoo, an experience that inspired his interest in poetry, science and anthropology.