My Pekin hen, hatched on 4/25, didn't lay until the following spring. She stopped laying around the first of September. I suspect yours will wait until next year. It is my understanding that this is far to late in the year for your geese. Wait until they lay for layer, or better yet, don't feed layer at all. I have never fed layer for ducks or chickens, and never will. I use a 20% all flock feed, with oyster shell on the side. Others do this successfully as well. I never have to worry about what type or age of birds are in the pen. I find it far easier this way. I don't know if my duck eats the oyster shell or not, but her eggs have really thick shells.