My B.hyp. nest in the bird box has finished - no activity - didn’t see any similar activity to your “air conditioning” prior to this.
Hi Steve, Urbanbumble
I had a hypnorum nest in a bird box and observed several workers at the entrance fanning during the warm weather. I have seen other species fanning during hot weather as well.
I had a camera in this nest box and noticed that many workers were fanning within the nest box, several just inside the entrance and 3 to 4 fanning over the nest material.
This nest was very active and busy but now unfortunately in just over a week is dead due to wax moth. Sad to see its decline and to see the wax moth but been able to do little about it. Unfortunately I do not think the colony had time to produce any young queens (although plenty of males waiting outside) !
I still have an active terrestris nest in an artificial box - just hoping the wax moth doesnt find this nest just yet.
Thanks for your contribution. (I’ve only just seen it). Very interesting and informative. You have the advantage of a camera in a bumblebee box. Obviously fanning by workers is much more widespread than I had realised. I think that I may have seen this behaviour by workers at the entrance to a nest box before but have not realised what was going on. Damage to nests by wax moth seems to be quite common. Last week I came across two B.lapidarius nests in close proximity which had very recently been dug out by badgers.
5 July 2017