A WARNING over the dangers of Avian Flu was made this week after several little egrets were found dead on the Helford Estuary. Yesterday the Marine Strandings Network said it had been made aware of of several dead little egrets on the Helford estuary. It says the deaths have also been reported to the Department of the Environment, Food and Rural Affairs because of the risk of avian influenza. The risk has been increased to very high for wild birds and medium for poultry with high biosecurity and high for poultry with poor biosecurity. The findings follow concerns about the fate of up to 60 wild swans on the Penryn River who disappeared from their usual feeding grounds without warning last week.