User blog comment:Cbachura/Mh4u new info/@comment-5043481-20140713201912/@comment-25083735-20140719175053

Everyone says the same thing. Honsetly he might be driven away, but in part of the trailer it looked like he was in the Ansestral Steppe. I think he is just very similar in relation with bats, migrating after dark to a new area to feed. That could explain why you fight him at night.