Aberrant Owlbeast 8 - 10 Azuremyst Isle A H Humanoid
Berserk Owlbeast 58 - 59 Winterspring A H Humanoid
Chieftain Oomooroo 11 Azuremyst Isle A H Humanoid
Contaminated Wildkin 15 - 16 Bloodmyst Isle A H Humanoid
Crazed Owlbeast 56 - 57 Winterspring A H Humanoid
Crazed Wildkin 9 - 10 Azuremyst Isle A H Humanoid
Crazed Wildkin Corpse Uncategorized
Deranged Owlbeast 8 - 9 Azuremyst Isle A H Humanoid
Guardian of Elune 60 Winterspring A Humanoid
Infected Wildkin 14 - 15 Bloodmyst Isle A H Humanoid
Irradiated Wildkin 14 - 16 Bloodmyst Isle A H Humanoid
Lunaclaw 12 Darkshore, The Barrens A H Humanoid
Lunaclaw Spirit 13 Darkshore, The Barrens A H Humanoid
Marauding Owlbeast 46 The Hinterlands A H Humanoid
Moonkin 12 - 13 Darkshore A H Humanoid
Moonkin Oracle 13 - 14 Darkshore A H Humanoid
Moontouched Owlbeast 57 - 58 Winterspring A H Humanoid
Mutated Owlkin 3 - 4 Azuremyst Isle A H Humanoid
Nestlewood Owlkin 3 - 4 Azuremyst Isle A Humanoid
Primitive Owlbeast 44 - 45 The Hinterlands A H Humanoid
Ragged Owlbeast 53 - 55 Winterspring A H Humanoid
Raging Moonkin 12 - 14 Darkshore A H Humanoid
Raging Owlbeast 54 - 56 Winterspring A H Humanoid
Raving Owlbeast 9 - 10 Azuremyst Isle A H Humanoid
Razortalon 44
Rare The Hinterlands A H Humanoid
Savage Owlbeast 46 - 47 The Hinterlands A H Humanoid
Vicious Owlbeast 41 - 43 The Hinterlands A H Humanoid
Young Moonkin 11 - 12 Darkshore A H Humanoid
all the different moonkin.
I assume you havent done the "Wildkin of elune" quest line and/or no nothing of wow lore
http://www.wowhead.com/?quest=4902
While Children of Cenarious and Dryads are quite powerful druids (dryads being more towards Restoration, keepers being more balance, hell Illidan and Malfurion were trained by Cenarius, an Ancient) owlkin are more on the stricter side of Balance as they are literally the "Pets of Elune" (Who is the moon goddess, incase you didnt know, thus the name, Moonkin) meaning they tend to be more towards what the balance tree is going for, where as Ancients (Dryads and Keepers) are just generally drastically OP Druids (not so much in the feral tree however).
Moonkin makes perfect sense according to lore, the reason you don't encounter many NPC X-Kin casting balance spells is because they are typically tainted or enraged, and as such have lost their "balence" and instead focus on beating crap up with their fists (thus the newish talent, Owlkin Frenzy and how it used to only apply to Physical Damage.).
Hope this helps.