The drip cups below the nipple in sytems available for industrial poultry ARE NOT for the birds to drink ffom. They are to provide a collection point for the waste water that the bird does not consume while getting water from the niipple. The real purpose of the drip cup is to prevent wet litter.
The only use for a drip cup in the industrial poultry industry is to collect the drippage from a poorly managed sytstem or to collect waste from high delivery nipples in broiler breeder houses in hot climates, Yeah - they may look like they will work as an altenative way for the bird to drink but let me assure you that a bird drinking from the leakage into q drip cup is spending a night on the town in e coli ciity.