Ive heard of people sending their dead chickens in for testing when they want to rule out disease. How do you go about this? Ive lost a ton of chicks from a breeder and I want to be sure. One just died this morning, Ive raised them the same as any other chicks Ive had. Checking bums for paste every day, treated for cocci, fresh food and water on both sides of the cage, heat source on one side of the cage. Im just discouraged and worried that something else is going on here..