Why do we not see the shadow of aeroplanes and birds flying in the sky Share with your friends Share 3 Hanut Bhatt answered this Because birds and airplane fly in the sky very high so their shadow cannot be seen . if you see that when bird come down their shadow can be seen. -2 View Full Answer Lohitaditya Konwar answered this when the sunrays fall on the aero plane, a really faint shadow is formed and it is so faint that we can't see it. -2 Sanvi Srivastava answered this Because it's flying at high altitude 0