Naturally, animal welfare groups have never been fond of this little secret. According to English-language German outlet The Local, some critics of the practice have even drawn connections between the chick-killing process and Nazi extermination efforts.
"We don't mean to compare the acts, because the Nazis are unique through the monstrosity of their extermination work," German paper Rheinische Post wrote. "But the behaviour of deciding over life and death and only valuing animals for their usefulness is related."
It was in response to these welfare concerns that the German government funded the research into egg sexing methods, which could be revolutionary for farm animal welfare.
Though the research is still in development, an implementable method for in-egg sexing would spare quite literally billions of lives.