The environmental history of this stuff is really interesting - Elinor Melville wrote a good book about the "ungulate eruptions" following the Spanish conquest

The environmental history of this stuff is really interesting - Elinor Melville wrote a good book about the "ungulate eruptions" following the Spanish conquest of Mesoamerica: http://books.google.co.uk/books/about/A_Plague_of_Sheep.html?id=kEvQLSDmv_wC http://books.google.co.uk/books/about/A_Plague_of_Sheep.html...