I am travelling to Europe at the end of the year (all of december away)!
I was wondering if anyone might recommend best places to go bird-wise? as far as I'm aware, we will be in the following countries. We have not decided on cities yet. However, if the are some big worthwhile places I'm sure I could get my family to detour

Spain
(Southern )Germany
England (briefly)
Belgium
France
Switzerland
Thanks
