ABSTRACT
In a 1908 letter to Earl Grey, the Governor General of Canada, U.S. president Theodore Roosevelt recognized what we would now call the “transnational” implications of the conservation and preservation movements: “It is evident that natural resources are not limited by the boundary lines which separate nations, and that the need for conserving them upon this continent is as wide as the area upon which they exist” (qtd. in Dorsey 4). In particular, the migration of birds across the U.S.–Canada border became an ecological driving force behind the emergence of new forms of sovereignty in both countries, but especially in the U.S., on which I focus domestically and in relation to its northern neighbor.
