The NARF maintains a range of breeding poultry lines to provide fertile eggs and chicks for research purposes. Chicken reproduction, Egg Handling, Incubation and Hatching Compared with other animals used for research, like mice, chickens have a relatively long reproductive cycle, with female chicks taking up to 8 months from hatch to reach sexual maturity and 5 months for male birds. This article was published on 2024-09-02