It looks to me as though there has been a new hatch of Bumble Bees in our nest. The new brood are huge 2 if not 3 times the size of the originals.
I think I may have been witnessing their first forage sessions. The 'smalls' come in to land on a straight flight path, direct to the landing pad. The big boys find the ship no problem, then circle or search back and forth about 5 meters before coming in to land.
This chap is just on his way out. B.lucorum as far as I can tell.
hazgeoff
you are so lucky damned if we can get them to nest.