Winterspring
Started at level 57
Finished at level 58
With Western Plaguelands out the way, you could head over to Eastern Plaguelands, but with both Winterspring and Sithilis starting to go green now, I chose to go there first. I chose to do Winterspring first as Sithilis mobs, although around the same level, can be a bit harder.
[54] Chillwind Horns
Objectives : Collect 8 Uncracked Chillwind Horns
Rewards : XP!
[56] Wild Guardians
Objectives : Kill 15 Raging Owlbeasts and 15 Ragged Owlbeasts
Rewards : XP!
These two quests can be done while running around the zone. Chillwind Horns is the follow on from the Burning Steppes quests, after you completed the Broodling Essence. There are three different types of Chillwind Chimaera around the zone; Fledgling Chillwind, Chillwind Ravagers and Chillwind Chimaeras. All three will drop the horns, however I had the best rate with the 'fledgling' which was nice as they are the lower level ones.
You will find the Fledgling Chillwind along the west side of the zone, usually higher up in the rocky part than along the flat part near the path. Up there is also where you will find the best population of Ragged Owlbeasts. Both mobs will be mixed in and around with Bears, Yeti's etc so you will just have to kill everything (yay xp!)
For the Raging Owlbeasts to complete Wild Guardians (which comes from Felwood btw) you want to head just north of Everlook. They are basically all around the area up there, ranging quite wide.
[56] Threat of the Winterfall
Objectives : Kill 8 Winterfall Pathfinders, 8 Den Watchers, and 8 Totemics.
Rewards : XP!
[56] Winterfall Ritual Totem