You might appreciate this....
http://gizmodo.com/5832367/this-insane-machine-sucks-up-living-chickens
“Harvesting chickens by hand is back-breaking workoften called the worst job in the poultry industry.”
Thanks for validating my 44 year old memories. On reflection I recall that it was early spring, not early summer. The heat was from the bodies of thousands of chickens in a confined space, not from the outside temperature. Every couple of hours we took a brief break outside. Breathing the cool, clean northern Wisconsin air seemed a touch of heaven.