Turducken in Calgary?
Turducken is a family favorite and I have done one for the last 3 years at Thanksgiving and Christmas. We always get ours from the gressier spoon in Canmore. They will give you all the cooking instructions plus you can buy their gravy as the juices that come off the Turducken are usually not that suitable to making a good gravy. Be prepared, you cook it on a very low oven (275) for 12 to 14 hours. It hardly looks like its cooking but it is, so you'll need a good thermometer. Really worthwhile and big conversation piece!
Both Valbella and The Griesser Spoon have turduckens, if you'd prefer somewhere closer to home then I'd check with Second to None or BonTon. Now you've got me thinking I need to get planning Thanksgiving already (til now I was immersed in back to school stuff)
Valbella 104 Elk Run Blvd Canmore: http://www.valbellagourmetfoods.ca/deli_specials.php
The Griesser Spoon 702 Bow Valley Trail, Canmore: http://www.griesserspoon.com/turducken.html
Second to None Meats in Mission and Montgomery (worth going to even if it isn't for turducken): http://www.second-to-none-meats.ca/
I would try Bon Ton Meat Market, Second to None Meats. both in Calgary
Railway Deli & Restaurant (702 Bow Valley Trail, Canmore, 403-678-3637 or The Valbella Deli & Cafe -- which was the Griesser Spoon for a few years -- is also operating again at 104 Elk Run Boulevard (403-678-9989).
The Deli sells and ships Turducken all over the place as a special treat during the Yuletide. If your tastes run in a slightly different direction, you can also get a Turduckham, which, of course, is a ham inside a duck inside a turkey.
Certainly let your fingers do your walking on this. Most of them advertise it for the yuletide. Let us know if you can find one for Thanksgiving.