Dead Geese laying around in fields....

I've noticed this alot this year. South Bridge field for example had at least 10 dead geese laying around the field that I saw while retrieving birds. I also saw many more on Saturday in the North Roberts/Yankee field. Anyone know the story on this? I've heard a couple explanations.....

1. "The geese are gorging themselves to death" (Looking at this logically, it seems unlikely that THIS YEAR the geese suddenly turned into ravenous hogs to such a degree that their digestive systems couldn't handle the strain).

2. "Disease" (self explanatory).

Anyway, if anyone else has heard any theories or explanations....please weigh in.

P.S. HAPPY THANKSGIVING!