My character was approached by another victim of fowl thievery. Found the trapping site, picked up snares and feathers, walked to the closest mountain, did the spell (that's listed in known spells from completing this quest once already). Went to tell the victim that the spell is completed. But I don't have that option.
I did speak to the 'informant' after the spell completion was not acknowledged. The sage wants me to bring him a bird, but I already know the spell.