I had goslings hatch completely unexpectedly this year, my fault for not marking down when the mums started sitting and totally lost track of days
But it takes a good week for my feed place to order in anything special and a few days to buy on-line so I just soaked some coarse mix, made it up with plenty of water, and they all loved it!
I did try grinding it all down in my blender first
but that killed it, so not going to do that again
but also I'm not going to bother buying special food in future, they all now go and clear up after the sheep have been fed so no waste, great!