Done Cows being deleted?

I keep having my good fluid cows being deleted, but the junk ones remain.

My good ones are in pens, and cannot escape, the just ones just roam around and some time fall off the sides, but the ones in the pens are the one disappearing. I know they can't be falling through the floor since I have an lower level under them.

Is some thing deleting cows? This time, the thrd time its happened, I lost 27 of them last last time, all in the same chunk, all others are fine. The second time about the same number, the first time I about half that.

These cows take forever to get back.

 

If you have other spawners it deletes the cows to get the spawners mob

 

no spawners automated, except a dark room

 

do you have a trashcan next to anything from mfr it may be causing a CHUNK CORRUPTION.

 

The only thing that set this out from other is it has good number of conduits, miniblocks and a immoble turtle running a 3 minute timer.

 

It seems to happen when I get too many cows in one area. So I think its self caused.

 

I had 4 named chickens vanish that i got from a luckyblock that vanished.. pinned in and everything.