when can chicks go to outside coop

[tiffh]

hi there i have 13 3 week old bantams, i live in alberta canada, right now its probly -10 or so at night ,, maybe -1 during the day.. i would like to get these chicks into coop which is insulated, and i have 2 250 watt heat lamps out there.. how long till i can put them out.. im hoping to get it to room temp out in the coop.. thanks

 

[DavidKerk]

If you decrease the temperature every week by about five degrees by raising the heat lamp then they should be ready to go outside when the temperature inside their brooder is the same as the steady temperature inside the coop. I hope this helps!