The invention relates to a method for producing chicken at a hatchery, the method comprising； - incubating a batch of eggs in an incubating device during an incubating period of between about 7 to about 20 days, and then, - for each egg of the batch, detecting the presence of a hatchable chicken embryo, - based on the presence of a hatchable chicken embryo, dividing the batch of eggs into at least a hatchable batch portions and a not-hatchable batch portion, - hatching the hatchable batch portion until hatching occurs, - rearing of chicken hatched from said hatchable batch portion, wherein the method comprises at the hatchery processing the not-hatchable batch portion into feed and administering said feed at the hatchery to hatched chickens during rearing.
