In Job 39, which bird leaves her eggs on the ground to warm in the sand?

Answer: The ostrich

God describes the ostrich: she leaves her eggs on the ground and treats her young harshly, yet laughs at the horse and rider (Job 39:13-18).

“The wings of the ostrich flap joyfully, but cannot match the pinions and feathers of the stork.”— Job 39:13 (BSB)