In the Delgamuukw decision, the Supreme Court of Canada clearly placed the onus on the Aboriginal nations to prove their title by showing occupation of lands at the time the Crown asserted sovereignty. In this article, it is argued that the common law could assist them in this respect. They should be able to rely on present or past possession to raise a presumption of Aboriginal title, and so
... [Show full abstract] shift the burden onto the Crown to prove its own title. Moreover, Aboriginal nations may be more successful if they bring an action for trespass or for recovery of possession of land, rather than for declaration of Aboriginal title.