Replacement bottle for New Look Drinker 4.5 litre chick drinker. The bottles can be made in bulk in different colours. Currently the bottle from Bellsouth is blue with a natural window (about 1cm wide).
Bottle is made in Australia and has recently (end of 2017) been improved with a window and slightly lower lip, meaning the Bellsouth baby chicken drinkers fill quicker.
See it on Bellsouth Youtube