BBC News
Published
media captionCCTV captured the moment a vandal took a chainsaw to the platform
Conservationists hope a pair of ospreys will nest at a new site after their platform was cut down with a chainsaw.
BBC Springwatch presenter Iolo Williams said it was "environmental vandalism of the worst kind".
CCTV cameras recorded the moment the platform was cut down and North Wales Police branded it a "disgusting act".
In a tweet, Rob Taylor, rural crime team manager for North Wales Police, said the force was "pulling the stops out to try and catch the person or persons responsible for this".