Yeah, found this Canadian article: Exploding Arctic snow geese numbers stabilizing, but still high

In the last 20 years, new farming methods have resulted in better food supply along the big white birds' migration routes and their population has responded.

In the 1970s and '80s, there were between two million and three million snow geese in central North America. Now there are about 15 million.
Apparently they're so overpopulated that they're destroying their ecosystem.

I learned something else today.