Look for a major or complete desertion of the colony by all adult bees over a short period of time.,
Look for bees.,
Check for the queen.,
Check for another colony moving in.
The period may be hours or days.;
, If bees have been killed by something toxic or by something in the hive, they will still be present.
, She will often still be present with a very reduced number of workers.
, With CCD, this is unlikely to happen (robber bees). There may also be an unusual delay before wax moths invade the dead colony.