IN THE world of poultry farming, th

IN THE world of poultry farming, the sexes are unequal. Broilers aside, hens can look forward, if that is the right phrase, to productive and reasonably long lives as layers of eggs for human consumption. Cocks are generally for the chop, a process that vexes animal-welfare activists. Only those few needed to keep the species going are allowed to live beyond chickdom.