They've been around a while. Mostly on the edge of the lagoon. The other night they tried to get in a round of golf for free (the course is closed, but I guess they "walked on"?). No balls. No clubs. They spent most of the time around the sand traps. *
I hardly care whether it's Canada or Canadian, though perhaps a true Canuck would. (According to Wiki "Canada Goose" has chronological precedence, dating back to 1772.)