the slabs in front of the windows represent the ground level
the button at the right also works in both modes (see semi-automatic mode below)
mode automatic: (light on)
for every egg collected, the system cooks the adult chickens (not the baby ones)
so it also collect the eggs
mode semi-automatic: (light off)
you have to press the button at the right to cook the adult chickens
if you don't it will collect their eggs (more eggs)
CREATIONS
MINECRAFT-SCHEMATICS.COM