OK I've worked out what happened.
When I moved the webcam from the brooding box to the hen house, I updated the web page and the editor cleverly deletes Javascript (which is used to embed the viewer on this page) unless I go into HTML mode... anyway cut a techie story short, it 'should' be working now, I've just got to tweak the position of it a little.
The biggest problem is all the chickens and ducks spend most of the day in the field! Must be camera shy! :lol: