Marion used to visit the shrine here. Skylord Omnuron tried to give the harpies the benefit of the doubt, but I never trusted her.
Completion
So the harpies are tools of some sort of dragon - "Sethria."
But what are the dragons doing to those eggs? And what's this 'special' egg that Sethria wanted so badly?
This is beyond me, <name>. I've given a report to Skylord Omnuron - he'll know what to do next.
Notes
There are signal fires all over the ridge:
On extinguishing a fire:
Marion Wormwing says: Step away from there, <class>!
Hold Marion in one place as Thisalee exits flight form behind her and walks up on her:
Thisalee Crow says: Gotcha Chickenlips! You'd best get talky, or I'll get stabby.
Initially, Marion says one of the following. Choose the soften her up option and she'll randomly choose another, followed by some commentary from Thisalee:
You'll get nothing from me, <race>!
Do what you will. My new masters will cave my name into your flesh before they execute you.
<Marion sqaks loudly and glares at you.>
Your cities will fall, <race>. You'll perish in the darkness of the new regime!
<Soften her up.>
Thisalee Crow says: We don't need to tell Omnuron about this.
Thisalee Crow says: Easy, <name>. We still need the info.
Thisalee Crow says: Hey, you don't waste any time.
Thisalee Crow says: There's more where that came from, Marion!
Thisalee Crow says: Brutal!
Thisalee Crow says: Wait, was I supposed to be the good cop?
Thisalee Crow says: I'm not sure that's strictly necessary.
To get some information, actually ask the question: Why are you stealing eggs?
She asked for eggs. Eggs for her fiery hatchery in another realm.
And one egg... a special egg... she sought more than any other.
Who? Who are you giving the eggs to?
She of the skies, but also of darkness. Brood of the Earth Warden. Invincible!
Brood of the Earth Warden... you answer to a black dragon? Give me a name!
Foolish <race>! There is a new order. Aviana is dead. DEAD! And never coming back.
Tell that to the druids in the trees.
Sethria will soon be the master of the skies, and she has made sure that Aviana will never be reborn. The egg is hers.
You are too late.
<Order Thisalee to kill the harpy.> <Ask Thisalee to release the harpy.>
Kill
Thisalee Crow says: You're my kind of mage, <name>! We're finished with this filth.
Release
Thisalee Crow says: You're a better person than I, <name>. But I suppose the harpies are just pawns here.
Then
Thisalee Crow says: Meet me back at Aviana's Shrine, <name>!