Chickens can develop problems with their liver and / or kidneys. The three most common conditions being Fatty Liver Haemorrhagic Syndrome (FLHS), Fatty Liver and Kidney Syndrome (FLKS) and Enlarged Liver.
Fatty Liver Haemorrhagic Syndrome (FLHS)
This disease can affect flock members of any age. Over time fat is deposited in the liver and causes the liver to lose its structural strength and become enlarged. Once this occurs, the chicken can haemorrhage from the liver and may die. This usually occurs when the hen is straining to lay an egg.
Fatty Liver and Kidney Syndrome (FLKS)
FLKS mostly affects younger birds; it can be caused by nutritional and metabolic issues; primarily a lack of biotin.