No sight or sound of the chicks today. An adult broke cover on the near side opposite the treatment outlet and flew high into the trees then disappeared. Apart from an adult fly past by the weir later that was all. To hear no calls at all feels strange – I’ve grown used to hearing them. I walked to the nest site but there was nothing there either. If the chicks had been on the wooded stretch it seems likely I would have heard them – I wonder if the presence of an adult where there was none yesterday might suggest that they had been driven off?