This photo has at least 28 babies and only two adult geese. There is more to the flock over a slight drop off behind these geese ... with two more adults and 25 or so additional babies ... for a total of four adults and 50+ goslings. (The goslings wouldn't stand still so I could get an exact count.)
The only thing I can figure is that we accidently stumbled upon the local Canada Goose daycare center.
Now we know where Canada Geese take their babies while they're at work during the day.