While Radagast tends to the poisoned animals, some nearby Beornings are looking into the cause, which is a mystery considering all the Mirkwood spiders seem to have fled the area.
'Now that you are here, ${PLAYER}, I have little need for odd and flighty dwarves! Many goodly beasts in this most northern edge of Lasgalen have been sickened with poison. I would have sworn it was spiders, yet of course it could not be, for they have all gone missing.
'I have spoken with Beornings who dwell nearby to the west, and they, it seems, have a very similar tale to tell. Will you go to them and learn what you may, while I tend to my sickened friends? Bear with you a gift of honey. It will sweeten your dealings, I think you will find.
'Once you have gathered some honey from over there, you will want to seek out Threkmóth, the Beorning elder, at Skoghús, due south of here.'
You should collect honey to present to the Beornings as a gift.
You should travel due south of Radagast, in Thornholt, to Skoghús, the Beorning camp.
Threkmóth can be found in Skoghús, deep in the Thornholt woods.
You should introduce yourself to Threkmóth, the leader of the Beorning settlement, and deliver your gift to him.
You should go speak with Vaskorn, who can be found in Threkmóth, deep in the Thornholt woods.