I checked my bees today since it made it into the 60's the last couple of days. My fist indication that something was wrong was when I removed my entrance reducer to see if there were many dead bees. There weren't many but there was about a 1/4 inch of what looked like dried bread crumbs. When I opened the top the cluster was top center and about the size of both my fists put together and there were no bees in the bottom hive body. Plenty of honey was visible in the top body. Mostly dark brown empty comb in the bottom body. As a first year bee keeper I wasn't sure what to make of this? I'm assuming I need to start over in the spring. This is my only hive...any advise?