The swan family we have been helping now fly away during the day ( not a good area for food ), they normally return at dusk, when we feed them. Recently they have been absent but around again in the morning. There is no decent water for them in the near area. The reason we still feed, are they flying in darkness to come and go? They are 8 months old, the dad has been killed, mum is wonderful and is still with them. Thanks chrissie