Just back from a talk by Jeff Pettis from the Beltsville bee lab. He said this may be the worst winter in history for bee losses. Says many producers are in the 50% loss range.
He also was reporting that poor queens and drone layers appear to have around 50% of their sperm sterile. He is continuing this research about why this is happening. Doesn't have an answer but believes this is one of the causes of bee loss.