In the story of A Short History Of Indians in Canada, why are the Indigenous people represented and talked about as if they are birds who need to be “bagged” or “tagged” and released back in

In the story of A Short History Of Indians in Canada, why are the Indigenous people represented and talked about as if they are birds who need to be “bagged” or “tagged” and released back into the wild? What might this suggest about how non-Native Canadians and the Canadian government treat Indigenous people?