With buildings that can accommodate as many as 30,000 birds, walking through with buckets to remove dead birds, do maintenance, provide supplemental feed, etc., is both tedious and time-consuming. The Poultry Building Trolley consists of a height-adjustable, 6- by 2-foot, four-sided tray suspended from a track that's attached to the ceiling. (Tray can be stationery or dump-style.) Locomotion is manual or electric, depending on model. The electric types feature 24-volt gear-driven motors powered by rechargeable lithium-ion batteries and are controlled via hand-held remote with forward, reverse, stop, and speed adjustment options.