A little to the right of center you can see a number of capped brood cells. These are cells with larvae in there last stage before emerging as mature bees. The open cells almost all have fresh laid eggs and young larvae.
This is all normal except for the fact that it is only the first of February!
They were still dormant and not producing new bees last year until the first of April.
I am sure the bees know that there will be little more wet cold weather over what is left of winter.