There is the obvious overt robbing but also, progressive robbing where scouts and foragers just go into poorly guarded colonies and help themselves, picking up varroa at the same time.



That I understand,  but that’s robbing,  not drifting....  if that’s what the researchers were eluding to it would be extremely poorly worded for a bee paper.  Drifting would be moving into and takeingup some sort of residence in the wrong hive.   Not going into a crashing hive and taking food.

Charles

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