Evidence of an Archgriffin

Listen to the cawing of the ravens (using your Witcher Senses if need be). Head east and a little south, uphill while scanning the skies. A murder of ravens are circling the rocky outcrop.

Climb up and onto the eyrie, with the remains of a nest and some leftover body parts and a mercenary contract (which you can optionally read, though this proves Hans’ men were slain). Of more interest are some thin rachides (sparse after feathers). They prove you’re hunting an archgriffin! Or, if you’re approaching at night, the archgriffin is on its nest, and combat begins immediately!

Back away from the nest, and meditate on the grassy foothills slightly south of the nest (head north, and you run into a bandit camp). Wait until after darkness descends; a piercing shriek and fierce wind of flapping wings announces the arrival of your quarry, a huge feathery fiend named Opinicus.

End: Opining After Opinicus

Step over to the corpse of Opinicus, and slice off some ingredients and a trophy to tie to Roach’s saddle. Then trot back to the Mercenary Camp, and explain your hunting prowess to a suitably impressed Hans. After your reward, the quest concludes.