Please help me unveil the following: My hive was thriving a month ago. Plenty of bees, enough brood, and honey. I checked them today. I saw a drastically dwindled colony, no pests, except for a few hive beetle, and a wasp flying outside by the entrance. No signs of dead bees by entrance. There was a frame of honey, so no starvation. Moreover, there many plants blooming yet. There is a queen, little (very) capped brood, not many bees. What happened? This is a regressed hive, no treatments whatsoever. Please help me with any thoughts about it.