My uncle Louie Lozko, better known as "Letsgo Lozko", he raised bantam chickens. He told me of the competition at a Poultry Show. One such event was a chicken calling contest.
Seems they would set a bunch of chickens loose in an arena and contestants would gather as many hens as they could using chicken calling techniques.
"It vas all in der voice" he said, "takes a good voice, get dem chickens in der roost."