The unfortunate Colony 11 has been robbed today by Colony 1. I think that I've stemmed the robbing but I will have to move Colony 11 for the second time tonight.
The action began around lunchtime today. There was a big increase in activity at the entrance of Colony 11 and Colony 1. There were bees flying widely around my garden; their flight paths were hard to follow. There were bees behind the hive and under it too. They crawled under the base board. I thought this was strange but didn't see immediately that it was robbing.