Hive inspection this morning... not good news. Only enough bees to cover four frames in the brood box, and I could see no signs of larvae in other cells. The one uncapped queen cell did not seem to have a larva in it either, so the colony may be in terminal decline.
During the inspection, I was careful to move gently. Even so, the bees were quite fierce, bumping into the veil and generally buzzing around angrily. I think this behaviour is a sign of being queenless. I'll leave it for a week and see what transpires.
Curiously, there is tons of activity in terms of foraging. Hmmm. Bamboozled.