It's been another few weeks since the last update, for a couple of reasons. Apart from anything else we've been away for a while, but more significantly, there has been very little activty in the colony. We haven't looked in at night yet - we will soon - but I'm convinced that we're actually down to under a dozen bumblebees alive in the nest. Even on the warmest of days, activity is confined to a few trips per hour, rather than a few per minute.
It's a bit unusual, but the weather has been so atrocious that the early peak of our nest (20 queens produced in April) has been totally out of sync with the food supply. Lots of rain and wind and unusually cold temperatures for May/June have kept the bumblebees trapped in the nest for extended periods of time and ultimately it seems they have perished.
However, we have not written everything off yet - we have learnt that bumbleworld is full of surprises and Friday (June 8) was no different. For a few days I'd seen what I thought is a bufftail male scouting the nest, looking for a mate. The behaviour is distinctive - flying around the outside of the nest and especially checking all the edges where he can smell the nest. Then he tries to get into the nest, but he has more trouble with the wax-moth flap than the nest inhabitants; although he does eventually manage it.
But that's not the most intriguing thing, because it actually seems that on Friday there was also a queen in our nest. You can see from the picture she is at least 2 "squares" in length (nearer 2.3) which would make her 20 - 23 mm in size - definitely queen size and definitely the largest bee we've seen in a while.
It's not clear if she has come from the nest or come from outside, although most likely she has come from the nest. Nor is it clear whether she is the "mother" queen of the nest, or a later "daughter" queen that has just been born.
All things being equal, the latter would be the norm, as we would expect queens to be hatching now to synchronise with the arrival of the males. However, things have not been normal! We don't know if the early brood of queens from the nest was all our "mother" queen would have laid, or whether she would go on to lay another brood, of which this would be one.
Or indeed, could this be our "Mother" queen, leaving the nest, perhaps to die? We saw that happen last year too, with two queens. What I can say is she did leave the nest, and I've not yet seen her come back or back inside the nest. That still doesn't narrow things down, so we have to watch and wait and see whether she may have mated, whether she comes back, or indeed whether she has any sisters yet to be born.