Swearing Budgies of the World - Names & Nationalities

After a lot of research and a painstaking process of elimination, here are the names and nationalities of the twenty swearing budgies that will feature in my project (in no particular order):

1. Joey (UK)
2. Peter (UK)
3. Joost (Netherlands)
4. Pieter (Netherlands)
5. Pierre (France)
6. Beppe (Italy)
7. Pietro (Italy)
8. Josef (Germany)
9. Pepe (Spain)
10. Pedro (Spain)
11. Iosif (Russia)
12. Pyotr (Russia)
13. Józef (Poland)
14. Piotrek (Poland)
15. Pepča (Czech Republic)
16. Petr (Czech Republic)
17. Peder (Denmark)
18. Seosamh (Ireland)
19. ヨセフ/Yosefu (Japan)
20. 日多/Petero (Japan)

Okay, that's that sorted. Now I just need to come up with some brilliant swears for each of them. Should be fun...