For a number of weeks we have had a steady flow of honey bees around the drain / kitchen sink outlet pipe...never more than two or three at any one time.
Today we had a two hour period in the afternoon when there were regularly between 50 and 100 at one time!
Does anyone know what they are doing there each day and why the numbers suddenly increased so dramatically for 2 hours?
We had always assumed that they were drinking...but so many bees at one time?
Many thanks in advance for any info.
A FEW MORE DETAILS:
They are definitely NOT going up the pipe in any big way at all....just occasionally one disappears inside for a second or two, but they mainly stay outside.
They DO land on the pipe itself and seem to hang around the lip more than anywhere else.
They also land in the drain itself - mainly around the edges rather than on the grill, but just occasionally a few will crawl below the grill for a short period.
PHOTOS and SHORT FILMS here if anyone wants to have a closer look: