If I remember correctly, Blood Watch's hippogryph master is Laando. If you've spoken to him before, then you can take one of my hippogryphs to him. That's a good lesson to know: hippogryphs are always trained to fly to their capital city, but they'll only take you to a remote hippogryph master after you've already been there. Since you arrived on one of Laando's hippogryphs, you can also use that route to return to Blood Watch with the caregiver's supplies.
Welcome back, <name>;. Was Nurguni able to gather everything on the list?
<Handing Topher the box, you tell him that Nurguni is making arrangements to have the larger items delivered by wagon.> Splendid! Now, I'll finally be able to set up some beds and a first aid station so that we can better treat the wounded and any survivors we encounter. I can't thank you enough for your help, <name>. You have my thanks and that of the Blood Watch's vindicators.
Upon completion of this quest you will gain: