While the other returned swifts fly outside around the block, the two in this nest went early "to bed". There are over 20 swifts returned now to the colony. They are inspecting the houses for small gaps where they can find a place to make a nest. These two at the webcam seems very experienced. Although they left 9 months ago for Africa, they exactly seem to know the way to their old nest. Last year, 10 days after their return the first egg was there. This year they wehere a little late. I wonder when we can expect the eggs this time.