Re: Moving down into the next box
Here's what I think is happening, as I have experienced with my Warre as well as my Langstroths:
The colony starts on installation with a limited number of workers to build comb, forage, nurse the brood, etc. They will build enough comb for the queen to lay in and for storage of nectar and pollen. The population will decline initially until the hatch-out rate exceeds the mortality rate of the older bees. It doesn't make sense for them to make more comb than they need to fill their current needs, since they can only keep a limited amount of brood warm. Once the first brood cycle emerges, you will see a dramatic increase in population, and you also will see the beginning of rapid expansion of comb, but it still may not extend into the second box. Now the queen has much more room to lay in for the next brood cycle, and the population will again increase dramatically in another three weeks along with another expansion of comb. When they need the space to expand into the second box is really just a matter of the starting population. They do not need any encouragement to expand into the second box. It's all a matter of population and how much brood they can tend to and keep warm with the existing population. They will expand into the next box when they are ready.
“Unthinking respect for authority is the greatest enemy of truth.” – Albert Einstein