*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*
Keep neither. Breed for one that has 31 HP and 31 Def. Those stats are incredibly important for a Skarmory.
Also, if your current Skarmory doesn't know both Whirlwind and Drill Peck, you might as well try to get those moves. Have a male Fearow pass them down.
*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*~*