Chicken problems - not laying & high death rate.
We have two sets of hens: red Leghorns about 2 yrs old, and Buff Orpingtons about 1 yr old. These are all hens and have been laying well since each group was about 6 months old. At start of last winter there was greatly reduced egg production & now in June we get 2 to 3 eggs from 10 hens. 1 egg is very small and is all whites inside- no yolk. Now we have this wk we have had 1 day when we got 0 eggs. Lost 1 hen to neighbors pit bull breaking into yard & coop & killing her, lost 1 to yolk dropping into ABD. & causing peritonitis. Lost 2 nd hen to peritonitis and had necropsy done, she had a congenital tumor of liver. It was tested and is not the contagious type of chicken tumors. All 3 were red leghorn breed. What can cause egg production to bottom out like this. We will appreciate all input. Thanks. B. Molyneux