Depending on the active block range, you may find more mobs spawning in the vicinity of your player(s).
I have been working on a thing, and I've put up a simple explanation as to how these are related (as far as I can reason, that is.) The more blocks which the ABMs are active on, the greater the chance of a spawn in the vicinity of a player.
mobshabitats - mobs spawning calculationShort answer: check your minetest.conf setting for "active_block_range", if it's greater than 3, then you may find more mobs appearing than you might expect. Birds are especially far-sighted, so even more troublesome.
echosa wrote:2.) I may have found a bug. Mobs aren't supposed to be able to walk through walls, right? I had an alligator walk right through a wall and kill me. I made a short Twitch highlight of it happening.
This would be a problem at mobs_redo level... especially when multiple mobs are vying for the same space, they tend to push eachother into spaces and, well, sometimes they push eachother right through.
Flying mobs are particularly bad on this front. I tried to put a dragon from another mobs pack (still using mobs_redo) on display, I had to make the enclosure 5 nodes deep to prevent it from clipping out. A few of my own videos show scrausics (red birds) and moonherons (black one in your video) clipping through ceilings. It's a known thing.