First off, I've never killed a Bitten Victim and got any gift, though I am normally pulling at the end of a battle so may have missed it. If the group did get a mana regen, it would make sense that bards don't get a benefit from it as we never do with spells/songs.
However, when the victims spawn spiderlings, I have noticed (may have changed recently) that killing the spiders count toward the slaughter count. Considering they are green it used to be a good way to up your tally quickly if behind.
Have been doing collections exclusively lately so haven't tested it recently.
NOTE: I moved this thread from General Discussion to LDoN as it only pertains to LDoN. Also I wanted to see how it worked as I've never moved something before. If I move a thread it is not that I don't like it, just I think it is better to be found in another section.
Sinfonian