So... even though they share the same mate, it would work to keep them separate to brood? I really like them... they're so interesting. And I really appreciate your help.
I want to build a house for them, maybe by the little orchard. It would give me a good excuse to fence it in. SOME mystical perfect creature has been nibbling branches way the heck up there above the circle of protection.

At first I thought I'd make it a duplex with the ducks, but I think I'd rather give the ducks a separate residence.
I wouldn't buy a goose from the grocery. By the time they have them in again, I will have geese enough to harvest myself. I'll most likely be looking to you for culinary advice when the time comes.
I have another six goose eggs in the incubator.

I took them when I gave the ladies my almost-done eggs. There were eight, two clears. The rest looked to be all at the same stage of development. How that happened, I have no idea. Goose magic, I guess. I couldn't kill them before they even had a chance to enjoy the sunshine.