Step-by-step explanation:
The excretory systems of both insects and birds share a common feature: they both have specialized structures for conserving water and removing waste products from their bodies. Insects possess Malpighian tubules, whereas birds have specialized kidneys with a unique loop of Henle to concentrate their urine. Both systems, in their respective species, allow for the efficient removal of waste products while conserving water, which is essential for their survival.