Like you , I live in a cold climate and there is still much snow on the ground, BUT I did get my first goose egg yesterday! I don't know if it is from my Chinese or Sebastapol hen.
If it's from my Chinese, I doubt that it would be fertile as she is in love with me, but not her mate. When she sees me she runs up to me with wings outstretched and wants to be picked up and cuddled.
If I get more, I will incubate them and see if they are fertile.
I've seen breeding, the geese are sitting in the doghouses, my male dewlap has even practiced some 'aqua-aerobics', so I'm thinking they are just about there. In preparation I caught and wormed each and every one of them as well as checked them over for any problems. My geese are not shy, however, they don't want to be caught- just want to be around you.
Anyhow, now they are on unlimited higher protein gamebird layer with added niacin. I'm hoping for lots of eggs.
I live in ND and have 5 Chinese geese that were born last June. 2 females, 3 males, I have been getting eggs for probably about 6 weeks. I get anywhere from 3 to 7 a week, each week I save them until Sunday and put them into the incubator, then candle them the next week and then toss them out. I probably have put 30 in the incubator and so far only 3 have been fertile and those are just from last week.