I am wanting to move my 38 broilers out into the tunnel house asap as I am sick of boxes inside with sooo much poo and going through so much wood shaving etc and I want to feed them more milk and curds so they need to go out side! The day time temps in there are perfect for them but the night temp is around 0deg celcius. So I am thinking of a brooder idea of say a large upside down box (with plenty of chickie access doors) with there heat sorse(sp!) in there but I am finding it hard to find any similar ideas on the net as lots of unrelated stuff always comes up! Any one done anything like this or seen it done?