Safari Life cycle of a chicken A hen can lay 300 eggs per year, but only if a rooster is present, the eggs may contain young. It takes 21 days for eggs to hatch Within three months, the chick has lost its yellow feathers and replaced them with adult feathers, ready to start the cycle again. Specifications: Collection: Safariology Gender: junior Colour: white, yellow, green Material: plastic Package dimensions: 19.5 x 23 cm (WxH) Age: 4-12 years Contents: 1 Litter with eggs 1 Hatched egg 1 Chick 1 Chicken