They do the same thing here in western PA. By 9Am they are done flying, just loafing around. Really they have no need to fly out anywhere to feed when all they have to do is bend over and feed where ever they are. To many food sources avaiable to them. The early season is nothing but a shooting season. That's why I just can't bring my self to hunt in September, just to easy. If you hunt it, early season, get in and shoot them up early and leave.
Now when the birds switch over to the higher energy food, (corn, wheat, etc) than I'll start hunting them. Usuallly around the 2nd week of November for me, than I'll start hunting geese. Even than I don't hunt them with a passion until late December and January when the other hunters have given it up for the year and I have many places all to myself.