Exotic mammals and birds in Canada : a historical review / N.S. Novakowski; technical assistance of: G. More, P. Reilly. : CW69-25/1704E-PDF

"Canada, much like its neighbour to the south, has until recently, had an ambivalent attitude with respect to the introduction of non-indigenous species (exotics) into natural or primitive areas. European man has favoured domestic and game animals for many hundreds of years. As he has successfully colonized more of the world he has traditionally brought wlth him his favoured animals. Consequently, the natural assemblage of indigenous animals was upset. Although Canada is now a relatively settled and industrialized nation the process of introductions is still going on and it is perhaps timely that the justification for any further erosion of natural areas and their native fauna be investigated"--Page 2.

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