The dearth can be very hard on bees and other pollinators. It is a space in time in the summer when some plants are done blooming but the others have not started yet which can make food very hard to find.
The best part is the queen is unaffected by the dearth and is evident that she is still producing eggs so the brood can continue to grow. In this picture the brown covered cells are developing brood (baby bees).
In this frame you can see the white developing larvae! So on we go, out of the dearth! We have fed the bees through this time, heling them to overcome the dearth.