This 75 year old article is fairly representative of articles in the early days of Canberra. I will note a great deal of mention was usually made of the Canberra Golf Club where it was particularly dangerous in regard Magpies apparently however this article describes Canberra as a Magpie's paradise and sums up the dilemma of residents as they struggled with the concept of not killing them as pests.
p.s I believe there are only four species of Australian Magpies...
The Horsham Times (Vic.) Friday 5 August 1938