And with that the red-haired captain moved ahead
like an eagle scanning left and right, the bird men say
has the sharpest eyes of all that fly the heavens:
high as he soars he’ll never miss the racing hare
cowering down low in the dense, shaggy brush –
down on its head he swoops
and pins it fast and rips its life away. So now,
Menelaus O my King, you turned your shining eyes,
scanning the crowds of comrades front and rear,
trying to see if Nestor’s son was still alive.

– Homer

The Iliad, Book 17, lines 758-767. Menelaus goes off to look for Antilochus and is likened in an extended Homeric simile to a sharp-eyed eagle scanning left and right for a racing hare as he soars.