German company Hatchtech and University of Leipzig have developed and patented a process to identify male hatching eggs. The process involves making a tiny hole .3 mm into the egg shell and testing for the hormone estrone sulphate during early stage of incubation. If the hormone is not present it indicates a male egg. This is good news for the commercial breeders as it could potentially halt the practice of gassing unwanted male chick or sending them through the wood chipper. They plan to make the process available to hatcheries starting in 2020. Unfortunately I doubt it will benefit small scale breeders.