Minecraft wiki entry for Egg_farming, associated text: This is a minimal egg farm consisting of 8 blocks, a hopper and chest: it's incredibly efficient in versions prior to 1.11, when it could house hundreds of chickens in an 1x1 area. Since version Java Edition 1.11's introduction of the maxEntityCramming gamerule, the number has reduced to 24. Check your servers settings on cramming before settling on this farm solution (this is not a problem on bedrock edition). Alternatively, you can place a single vines block in the space that the chickens occupy, and they will not suffer from entity cramming damage.