Okay, so I've seen a bunch of garbage chicken farms, and I've seen some good ones, but the one I use should work for even noobs.
You will need:
- A lot of cobblestone (an inventory would be good)
- Some ladders (to get up the back, optional if you have ender pearls)
- A pickaxe (in case you misplace a block)
- A lot of signs (or fence gates, signs are better)
- Buckets of water (four should be good, make an infinite water source right next to it would be nice)
- Eggs (to spawn the actual chickens; find chickens first)
- Some time
- Some torches
- Some chests for all your eggs (you'll get a lot)
Step 1: Make a 7x7 cobblestone ring, leaving a space for the door.
Step 2: Build that up a bit, about 3 blocks (now 4 total blocks in height)
Step 3: Build the walls up another block, then add a roof, leaving a small second wall. Leave a hole in the middle (see picture)
Step 4: Put water in the four corners, and put a sign in the hole we made in the last step.
Step 5: Add another block on the wall. Place signs or open fence gates everywhere above the water. (I used signs) (Tip: Signs can be placed on signs)
Step 6: Build the wall another block up. Place water sources on all signs (or until all water is still).
Step 7: Now for the fun part! Build the wall two more blocks up, then spawn the chickens in with eggs (eggs broken will spawn chickens) Do not put a roof on top of this, as you can put more signs above the chickens (two blocks above the water) and add more water for more layers. I had one on an old save that went from bedrock to sky limit.
Step 8: Wait for your chickens to grown up (one minecraft day/20 minutes). Soon, the eggs will come rolling in.
Why this works: The chickens float on top of the water, laying eggs. The eggs fall through the water, get swept away by the first one, then fall through that hole. Chickens will stay there forever, if you make sure they don't suffocate (only put about 128 chickens in each layer)
Important notes!: DO NOT put more than 128 chickens in each cell. They'll suffocate and die, and you don't want that. You can make the pens bigger, up to 8 blocks by 8 blocks. They can go from bedrock to sky limit, and still work, though I don't recommend this, because it'll lag your computer.
Soon you'll have a lot of eggs!
If you liked this, please diamond it. Thanks.
If you don't want to build it yourself, I have a worldsave for you to see that/how it works. It is located here