Birdwatching groups

Sorry I don't know of any personally but a wee search and a found something in link below
I think most of these things are done through social media these days and I don't do social media.

group.rspb.org.uk/.../

Hopefully others may have a better idea than me ;-)

Here is another one that may be more local to you. Gives a list of some that may be near you. Probably have to join though.

www.the-soc.org.uk/.../central-scotland

www.org.uk/.../community

Swww.rspb.org.uk/.../
Hope this might help! As I only know you live in central Scotland. In this link you can put your post code to see if there are any local RSPB Groups near to where you live in Central Scotland. There are RSPB Groups for younger children, teenagers and for Adults who  are 18 years and over!