On 2-9-14 I purchased 5 Dominique's locally. They stayed in a cardboard box with a heat lamp for about 4 days then I borrowed a friends brooder. After 1 week, one chick died then in another week, another one died. Through various posts I determined it to be cocci. I'm 4 days into treatment with Corid and my three remaining chicks are 3 1/2 weeks old. This morning - another dead chick. Could someone please offer any advice? They are in a brooder with a heat lamp, pine shavings, water, non-medicated feed. These cold nights have resulted in an 80 degree brooder despite the lamp. Did they get too cold? I just need some guidance please, this is killing me.