i feed them onion seeds and they seem to produce eggs until a max. count of chickens/hens/eggs in an area. i built my enclosure a bit stretched and bent for that reason and i like to think it helps (lol), anyway so far i am happy with the amount of eggs i get. But yeah, as soon as it starts to get busy in there no more eggs will spawn, but the onion seeds still get eaten. at this point i guess it's time to get some chicken meat :')
I also distrust any "simple farming methods", "best way to farm" and especially "ultimate guides to" after only a few days of accessability. Science it out! ;D