 Those crates are then piled 5 to 10 rows high on the transport truck to the abattoir.During shipment, the chickens tend to defecate, and that chicken manure tends to sit inside the crowded cages, contaminating the feathers and skin of the chickens, or rains down upon the chickens and crates on the lower levels of the transport truck.By the time the truck gets to the abattoir, most chickens have had their skin and feathers contaminated with feces.