You can see the grooming several times a day in my video recordings. Sometimes “Grooming Bees” appear and work off one bee after the other. However, grooming is usually started without planning. Shaking and cleaning movements of a bee (that wants to free itself from pollen/parasites) are apparently the trigger. Under Videos I have already published both versions.
Replacing the infrared lamps in the beehive results in a more uniform illumination and thus sharper images. I want to present two new recordings right here:
Grooming: Here a bee is trying to free itself from something. Again and again she is supported by other bees.
In the following video you can see a bee grooming 4 bees in a row. Obviously, there are bees that have exactly this job. The behaviour is therefore apparently not only triggered by the perception of pollen remnants or parasites on other bees. Well, I guess there are real “Grooming bees”. More Videos here.