Once the water supply is clean check that the birds easily find and drink the water. For day-old chicks, is there enough light to find the water from the start? Is the water fresh (was the system flushed shortly before the delivery of the day-old chickens)? Is the height of the drinkers correct and adjusted to the age of the birds? Is the system of drinkers used the same in the different phases of production (rearing versus lay)? Are bell drinkers used or nipple drinkers? What kind of nipples? Can the small birds easily activate the nipples? What is the nipple flow rate? Are there enough drinkers/ nipples per bird installed? What is the water pressure? How many hours is the water available? Most of these questions also apply to adult birds.