For your chick to be healthy and be in good shape they need good temperature in their house. Most especially when they are small ,the temperature in their house is very paramount. If there house is very cold they form cluster and if this happen is either they kill themselves through the process or they will not eat which will slow down their grown.
There are great advantage in making their house to be in good temperature. It promote growth ,reduce stress on the part of birds.
On my own part in order to make my birds to have a good environment I make fire for them at night and the weather is cold. I make use of coal pot and charcoal every night to do this. And before I go to sleep , I make sure the house is warm enough before leaving during this period I observe them and make sure everything is well.
Note: Checking the poultry temperature is very important inorder not to lose any birds.