In advance, the author apologises for the length of this report. It is long partly because there is a large amount of available literature on buffalo - most of it relevant to the subject in hand and much of it extremely interesting. It is long also because there was scope in the project to explore and test a number of 'what if' scenarios which have produced fascinating results - often not what were expected. It appears longer than it really is because of the large numbers of maps and diagrams intermingled with the text.