That is fantastic ! I am full of admiration !
I adore those birds, what a stunning colour. They remind me of the little "Cordon Bleus", small finces, that I used to breed.
There are at least 3 sub-species, but one has that incredible blue colour. We call them "butterfly-finches".
So you are going to heat a whole barn for your birds? I really like that
One mor thing to look forward to in spring : pictures of your birds