How much room do chicks need!?

[Unexpected chicken lover]

My cousin and i are disagreeing about the chicks being crowded and if its detrimental to their health

 

[Foster's Freehold]

Chicks need enough room to eat, sleep, romp, play, stretch their wings,learn to roost, and freely choose a warm or cool spot. Crowding too many in IS detrimental. Crowding can cause bad eating behaviors, pecking, disease, overheating and cannibalism. Average brooder gives about 2 sq ft per chick until they are fully feathered. Then it ups to 3 until they are ready to go to the flock.

 

[Unexpected chicken lover]

Chicks need enough room to eat, sleep, romp, play, stretch their wings,learn to roost, and freely choose a warm or cool spot. Crowding too many in IS detrimental. Crowding can cause bad eating behaviors, pecking, disease, overheating and cannibalism. Average brooder gives about 2 sq ft per chick until they are fully feathered. Then it ups to 3 until they are ready to go to the flock.

Thank you. I think ill take over their care for the next 2 weeks