Clue: More than one boy that is attractive and healthy in Scotland (6)
Answer: SONSIE
Explanation: More than one boy that is attractive and healthy in Scotland (6)
SONS ("more than one boy") + I.E. ("that is") 
*Anyone who has been to a Burns supper should be able to recall the line "Fair fa yir honest sonsie face" from Burns' "To a Haggis"