I only use my heat lamp at night and I am only using it because my turkeys are young and their feathers are in bad condintion because the guy I bought them from had them in a store so they were in cages but it depends on were you live
I think just the one heat lamp should be fine but if it gets really cold at night it cant hurt to put the second one in and extra bedding doesn't hurt just dont put to much
Well what I would do is just leave the heat lamp is so if they get could. How many do you have and how old are they? It is my second year and they only reason I have a heat lamp in the coop is because I just got some turkeys and they need the heat lamp you can also add more bedding not to much...