Traveling back to Hamlet from RoG/SW spawns like 100 bats

It might not be as obvious from this screenshot, but there were many more, it was absolutely absurd. When I returned from RoG to Hamlet via the Skyworthy. A bat attack wave immediately descended upon me. But it was really an abnormous number of them. I couldnt count them. But killing them with like 2 tin chest pieces 2 tin helmets, 2 football helmets and 3 log suits yielded me 45 pig skin and 52 monster meat, so it was really an absurd number of animals. This was also only day 123, and I had other bat attack waves in the meantime that only consisted of like 15 bats ((before I managed to clear them, I had to come back for them several times, this was on the roc island were I have my private shanty + the skyworthy)). I feel like being in another world than Hamlet kinda gathers these numbers up until you return. I was 20 days in SW and another 5 in RoG before since I had initially left my Hamlet.