And?
Scandinavian and Dutch people tend to have an excellent command of English, so they may still be communicating in English outside of specialist twitching sites. If not here, maybe on facebook et al.
Is the title of this thread "best birds seen whilst working, only British citizens need apply"? What if the "best birds" I've seen while working weren't in Germany? What if your "best birds while working" weren't seen in Britain?
This is a forum on the internet, which is international by definition. That is why, among other things, people in the ID section are asked to always provide an approximate location in a form that is intelligible to all.