At the Zoo we have an entirely female flock of ostriches – but you may seem them laying eggs during the breeding season. Ostriches are ground nesters: they make a depression in soft soil, sand, or straw, which acts as a nest and can lay over 60 eggs a season! If fertile, the incubation period is 42 days before the chicks hatch. Incredibly, an ostriches egg is the largest egg laid in the world. It is approximately the same volume as 24 chicken eggs and can weigh up to 1.5kg! Although it might be