Colony Collapse Disorder (CCD) occurs when a hive's inhabitants
suddenly disappear, leaving only queens, eggs and a few immature
workers. The vanished bees are never found, but thought to die singly
far from home. The parasites, wildlife and other bees that normally
raid the honey and pollen left behind when a colony dies, refuse to go
anywhere near the abandoned hives.

The alarm was first sounded last autumn, but has now hit half of all
American states. The West Coast is thought to have lost 60 per cent of
its commercial bee population, with 70 per cent missing on the East
Coast.