Please help, I have two problems with my birds. First let me say I flew youngbirds last year(had a great season). My racing loft only has enough room for the current birds racing, so the old birds were in a separate loft for the youngbird season. But they came from that same loft racing loft the prior youngbird season. At the end of Youngbird season I moved the old birds back into the racing loft in their own section. For about two weeks, nothing happened. Then I opened all the sections and let all the birds together. About a week later those oldbirds started dying. The birds show NO symptoms all, I would walk in the loft and one or two would be dead on the floor, and would be perfectly normal looking and have their weight too. So I started checking the birds at night. Nothing, absolutely nothing, no bad droppings no birds going light. No ruffled feathers. This started in early December. First I thought it was the youngbirds infecting the oldbirds cause only the oldbirds were dying. So I separated the OB’s from the YB’s in a different section. Then the youngbirds started dying as well, every two or three weeks one or two birds die. It is March now and is still happening. I even built a new temporary loft and put all of them in there, just incase it could have been the racing loft itself. They have been dying in the new loft too. The second problem which I can see (physically) in the birds is, all of a sudden a bird wont eat when its time to eat. 2 to 3 days later it dies because it dosent eat or drink. Still no bad droppings. Please help