The one I saw yesterday was right in front of Hayleybury. I could see the town looking west from where I was standing. I use to find it in Notre-Dame du Nord, but now it's private land. I'll have to ask permission because that was a pretty good spot.
All you need is mature deciduous forest with poplar, maple, ash, elm and bur oaks. In Notre-Dame du Nord it's ash, bur oak and poplar. In Guigues it was mostly poplar. In Ville-Marie, I have a good spot with poplar and maple. Just south of Ville-Marie it's ash and bur oaks and a spot with poplar and red oak. Between V-M and Temiscaming to south, maple is 100% guarantee.
I think that around Sutton bay park would be a good place to search if trees are more than 40 years old. Learn the 'song' and look up!