How are the ostrich kiwi alike?

The ostrich and kiwi are both Flightless Birds that belong to the group known as ratites, characterized by their flat breastbones and lack of a keel for flight muscles. They have unique adaptations for their environments; for instance, ostriches are large and well-suited for running in open savannas, while kiwis are small, nocturnal, and have a keen sense of smell for foraging in dense underbrush. Additionally, both species have evolved to lay large eggs relative to their body size, which is a notable trait among birds.