The paper describes an episode in New Zealand science commonly referred to as the moa-hunter debate. In the 1870s the geologist and curator of the Canterbury Museum Julius Haast put forward a proposal that a race distinct from the indigenous Maori hunted the giant flightless birds known as moa to extinction. James Hector, director of the New Zealand Geological Survey and manager of the New Zealand Institute, rejected this proposal and challenged Haast in what would become a bitter fight. Because (...) moa remains in the form of semi-fossilized bones, eggshells and occasionally preserved feathers and skin were important in the debate, the paper will use the analytical method of actor-network theory to reopen it. The paper thus provides an opportunity to study the strengths and weaknesses of ANT as a form of analysis. This analysis emphasizes a number of interesting points about the moa-hunter debate, including the ability of human actors to manipulate the meaning of common terms in order to create new theories, in this case Haast's theory of an earlier indigenous race in New Zealand. Though dismissed at the time, this was a belief that has lasted in alternative forms to the present. (shrink)