Heather in full flow at the moment

Was up checking the hives on the heather and they appear to have been very busy in the last week, there are already some frames capped. On the drive up there I could see the whole mountain was purple with flowering heather.This frame show where the bees were only given a strip of beeswax foundation and they have started to build their own comb.This is a frame from the same have that is more developed and has already been capped by the bees.On the last few rose hives I've put national supers with some strips and all 3 hives have filled out the 3 supers and may need some extra space by next week.