I'm sure that's all it is. They need to feel at home first. I had that problem too and after a few days to a week they were laying machines again.
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Since moving my Delaware breeding hens to their new home, they aren't laying hardly at all. Yesterday I got 14 eggs from 16 hens (different breeds) for the remainder of the flock...and ZERO for my four Delaware hens that I am trying to save for hatching. I am assuming that they haven't become acclimated to their surroundings yet... Does anyone have any ideas?
That is very common, Michael. Chickens are so very easily stressed. A move is stressful for them. I have had to wait weeks when I make moves.
Here's the start of my Delaware flock. If nothing else, should have plenty of eggs. The cockeral I hatched last June. The 8 pullets I purchased last week. Much to learn about the Delaware, but happy I finally found some close.

I'm new to breeding Dels, so can't give you an educated answer to your question. My Braden birds are 2 months younger than yours and yours are much wider and look bigger and better than mine. I like their nice yellow legs, also. The SOP says their beaks should be reddish horn.
I know what you mean about how hard it is to get a good look at their tails from the rear. Mine will always turn around and come to me when I'm trying to see how open their tails are.
Kim
Pet peeve is pinched tails, I see that a lot in my other breeds as well. Will not breed one forward with a pinched tail and luckily from this breeding, my 3 fav. pullets have nice open tails, so do the boys.