Give them alot more room to many birds for a 4X4 area
Agreed, plus too much lighting. I've got 90 in an area that size and have never had any problems with a 7 watt red bulb for lighting and heat with baseboard heater. Although, it's hard to turn down the lights when you are heating with a bulb. I always turn lights out at night too, which gives them a "cool down, resting" period. More room is always better in any situation.
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