I created a farm in survival. The bottom layer is 9 hoppers in a square that all feed into a chest. Above that is a layer of water surrounded by cobblestone and a fence gate.
Adult chickens survive just fine, but when introducing baby chickens via eggs or breeding, they die after about a minute. The two adult chickens I have in there seem to be fine though.
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Duplicate of MC-9388, please use the search function to see if your bug has already been submitted. Currently over 58% of tickets are being closed as duplicate.