Dumb Question... I have 2 Runners and 2 KC.. they are 3.5 wks old. It has been in the high 70's here and during the day the spend most their time outside playing in their pen during the day. We have a 4x4 indoor pen for them inside and they could care less about the heat lamp. I am going to raise it more but they don't bother to go to the area where it is anymore. I have only had chickens so I am not sure when do turn off the lamp for the ducks.. ??? just keep it on at night ? They are still covered in down with feathers starting to slowly come in. The indoor pen is in our mud room which is over 60 * with the heat lamp on even warmer. Thoughts ?