This new innovation has been designed and manufactured to the ongoing combination of high quality standard, robustness, hygiene friendly and practical, and can be attached to both 12.7mm (1/2 inch) and 16mm (5/8 inch) punch bar breeding cage fronts. Easy to assemble and clean, the seed reservoir offers instant visual assessment of seed levels, whilst dispensing its contents through the bars. The levels are replenished from outside of the cages, thus preventing contamination and fouling. Can be used in pairs (plain canary and mixed millets for example). The Hoppers contain up to ten days of seed supplied to the cage per pair. Hopper set (set includes 1 x lid, 1 x tube & 1 x base, as picture).