I found this film a few minutes ago. Not sure what year I’m guessing it might be one of the old RSPB films from the Annual RSPB film shows as said previously now sadly:long gone. I don’t think it was one of the many David Attenborough BBC wildlife films of the past.
https://youtu.be/uWPONIH7Ytk?feature=shared
Regards,
Ian.
This was an old film made by an ex-BBC cameraman and producer. It was never broadcast on TV, and was not ab official RSPB film. It was filmed in the late 90s, early 2000s - I remember it being completed about when I arrived at Minsmere in 2003