Scientists have invented a new method to determine the sex of yet-to-hatch chickens by “sniffing” chemicals on eggshells, an advance that could end the brutal practice of culling male chicks.
Most hatcheries across the world still sort chicks by their sex a day after they hatch, with male chicks being brutally culled immediately.
Some European countries have already banned male chick culling or plan to phase it out.
But if the sex of an egg is…