how is this possible? how could a chicken live without its head?

>>35158369
https://en.wikipedia.org/wiki/Mike_the_Headless_Chicken

>It was determined that the axe had missed the jugular vein and a clot had prevented Mike from bleeding to death. Although most of his head was severed, most of his brain stem and one ear were left on his body. Since basic functions (breathing, heart rate, etc.) as well as most of a chicken's reflex actions are controlled by the brain stem, Mike was able to remain quite healthy.

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>tfw my chickens were my only friends
>tfw I killed them all

Isn't it kind of fucked up to keep a chicken in this condition? Imagine not being able to see or hear anything but being forced to remain alive regardless. Hopefully it wouldn't cause a chicken as much distress as a human.

>>35159563
The front half of its brain was lopped off, leaving only the part of the brain essential for carrying out basic functions. It was so brain dead that all it could do was walk around and shit, which is pretty much all chickens do anyway so it wasn't a big deal. If it had any capability of thought, it was probably something robotic like "EAT, WALK, EAT, SHIT, WALK, WALK, RUFFLE FEATHERS, EAT" rather than "Oh God, please kill me"