For the last two days, Georgie has been spending most of her time sitting on the eggs and so I looks as though she has started to incubate.
For the last few days he has been coming in to roost in the evening earlier and earlier. Last Friday, she came in at about 6.30pm. On Saturday it was 6pm. On Sunday it was just after 4pm and on Monday she was sitting on the eggs for most of the time after 1pm.
Yesterday and today she has been sitting on the eggs more or less full time so today's egg will probably be the last one she lays.