Are they sixty per cent ewes? (5)
I believe the answer is:
sheep
'ewes?' is the definition.
(I've seen this in another clue)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for sheep that I've seen before include "Easily led people" , "Ovine animals" , "Cotswolds?" , "Woolly quadruped" , "feature of 21/23 [NATIVITY SCENE]" .)