Everyone seems to think they're only in Val. They're all around the lower valley type areas near the castle on the east side of Fjordur too. I've raised many of them there. They're easy to get, just take a decent mount with lots of health and melee damage. You can easily take out the packs defending the nests just make sure you pick up all of the eggs no matter what level or they won't respawn. Just dispose of the lower level eggs.

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