Yesterday, I noticed a large amount of dead bees in front of the hive and on the bottom board. In a rush, I scraped off the bottom board, and made a mental note to open the hive today. Today the entrance was blocked with dead bees. I opened it up and there's just a few bees left. There was three frames with brood and with a frame of nectar, but that was it. The other hives are okay. This was a package installed 6 weeks ago. It's been rain for a week here, but the other hives are flying. What in the world would take out a hive in just 2 or 3 days?