Can bees use honey stores to build comb or only nectar. I read that they use nectar to make into wax, but I was wondering if they will use extra honey stores to get the same result?
Bees are building wax when they need more storage space for nectar or brood. That is generally happening at the same time nectar is coming in, so nectar is the most likely immediate source of food when they are making wax. But if honey was all they had, they would use it.