I have 2 girls, they are 3 weeks old from Ideal. They are a buff rock & australorp. All of a sudden they just aren't right. They are weak, fluffed out, wobbly when they walk, sleeping a lot. I moved them inside with me under lights & the buff rock is eating a bit & she peeps & both are drinking. I put electrolytes in the water. The australorp seems worse. Why all of a sudden are they having a problem??? Were the other not letting them eat? Thanks for any clues or advise!