Hi Mow and a warm welcome to you from all the Staff and Moderators.
I was there for a couple of weeks in the summer time, so not sure where to go for the wintering birds. But one place which could be productive for passerines would be the Ringve Musikmuseum:
Node: Ringve (4633442178) | OpenStreetMap they had feeders hanging from odd places in the grounds. Also along the river in the town could be productive.
It would probably be an idea to post in our
Information Wanted forum; we have a couple of members who live there I'll see if I can point them to your thread.
I'm sure you will enjoy it here and I look forward to hearing your news.