The resident ecologist at Norton Mills lake has said that people's lives were put at risk by the person or people who shot to death the geese and swans.
Brian Morland said that police believed a large calibre rifle was used to shoot the birds through the wings and legs.
More top news
A look ahead at the forecast for the Tyne Tees region.
Gale force winds and spells of rain to start the weekend. The Met Office have now issued a warning
Paul Brand meets more parliamentary candidates in our last political programme before the General Election. Watch it here: