We have Shur grain, but it's basically called Minor's here. Ask at Shur grain about suet cakes, or treat cakes. If they don't have them, they probably won't, Canada is a bit slow on some things, make your own. Seems pretty easy, a base of animal fat, some scratch and some lay mash. Most people seem to use either beef fat or bacon grease. I'm going to assume you press it into a form for the birds and let it sit, or give it to them mixed up.
Some back in 2009 had this recipe:
Wheat Berries, Whole Flax Seed, Course Cracked Corn, Field Peas, Alfalfa Pellets, Black Oil Sunflower Seeds, Fish Meal, Oat Groats, Granite Grit, Vitamin & Mineral Supplement, Honey & Diatomaceous Earth
I imagine it was mixed together with bacon grease or animal fat.