Sorry KK the vid does not seem to have anything on it and only lasts a second m others may have more luck.A long single note whistle may be Starling as they make a variety of sounds
Pete
Birding is for everyone no matter how good or bad we are at it,enjoy it while you can
In reply to Dave - CH:
In reply to KKlin:
KKlin said:a gibbon- not very helpful
I've heard, KK, that it's notoriously difficult to tell helpful Gibbons from unhelpful Gibbons in the field.
;-)
Hopefully more help is on the way...
In reply to PimperneBloke:
Dave - CH said:where I'm sure one hears these things
Depends how loud the whistle is!
This is a duplication of another thread Bird song identificatio [https://community.rspb.org.uk/chat/f/hello/278730/bird-song-identificatio], which I'll share my, possibly unhelpful reply.
It sounds almost like a curlew flight call, but the immediate surroundings in the clip don't match a curlews normal habitat.
You could try the following link, noting what the habitat is around the area in question is. https://www.british-birdsongs.uk/
Mike
Flickr Peak Rambler