Consider: Previous studies have shown that dung beetles can navigate by the light of either the sun or the moon, yet they can also hold to a straight line even on clear moonless nights.
تأمل في ما يلي :‏ اظهرت دراسات سابقة ان خنافس الرَّوث تهتدي بضوء الشمس او القمر .‏