How long to keep heat lamp on

[Farmer josh]

How longe is my chick have to be on the heat lamp for:/:/

 

[ChickensAreSweet]

How old is your chick and what are your temperatures outside now?

http://www.feathersite.com/Poultry/BRKRaisingChicks.html

http://www.mcmurrayhatchery.com/chickcare.html

 

[Farmer josh]

I not got them there hatching on wesday i just wanted to know and how hot should it be :/:/