A hen may lay 300 eggs in a year, but only if a rooster is present can the eggs contain hatchlings. Eggs take 21 days to hatch, but a newly hatched chick is up and moving within a day. Within three months, the chick has lost its yellow feathers and replaced them with adult feathers, ready to start the cycle again. Scientific Name: Gallus domesticus. Characteristics: Can't get to a farm? Learn about the life cycle of a chicken with these easy-to-handle figures. Size and Color: Bright yellow baby chicks are as cute as can be, but in only a few days, they begin losing their feathers and transitioning to adulthood. These figures show the process, right up to the 3" tall adult chicken. The Life Cycle of a Chicken is part of the Safariology collection. All of our products are Non-toxic and BPA free.