A.T. Robertson Commentary Luke 17:37

"And they answering say unto him, Where, Lord? And he said unto them, Where the body [is], thither will the eagles also be gathered together." — Luke 17:37 (ASV)

The eagles (ο αετο). Or the vultures attracted by the carcass. This proverb is quoted also in Mt 24:28. See Job 39:27-30; Hebrews 1:8; Hosea 8:1. Double compound (επι-συν-) in επι- συν-αχθησοντα completes the picture.