Robbing: difficult to identify
Robbing is difficult for new beekeepers to identify and is often mistaken for afternoon orientation flights or a strong nectar flow. When the Robber Bee Scout Trap is successfully installed before robbing season it allows for instant detection the day that scouts begin probing the hive, because suddenly the bee keeper will observe bees getting caught in the trap. The time it takes for the hive to collapse once robbing starts is a very short time span, usually in a day or two the hive is unrecoverable. There is very little a beekeeper can do once the robbing commences.
Screening off the entrance to one bee space is the typical defense, but used with minimal success. The targeted home hive often looses substantial numbers of the colony due to the fighting and can never fully recover.
To read more about robbing and to see a handy checklist on how to identify it,