Dear Chadrook,
Yes, you are right. Canadians used to celebrate Thanksgiving with the Americans a while back, but this was changed to avoid too much Americanization of our culture . . . good job, eh?

Turkey is the main dish on average for Canadian Thanksgiving.
Goose was usually served in Victorian times and especially in England during the four periods when the Lord of the Manor received goods from his servants i.e. on the feast of St Michael on September 29th or "Michaelmas" when it was considered lucky to eat goose on that day.
I wonder whether the Czechs ever ate roast goose on or near July 6th, the feast of Jan Hus (whom the Czech Orthodox Church is preparing to glorify, together with Jerome of Prague, as Saints, would you believe . . .).
"Hus" means "goose" in the Slavic tongues, as you know . . .
Slavic Orthodox would boil perogies in oil on the feast of St Barbara as she was boiled in oil etc.
Don't you just love those Slavs?
Alex