Thank you very much for listing all the museums and collections.
The National Glass Museum in Leerdam does not have any birds on display. This may change in near future as there exist two "Leerdam birds" now.
We visited the Designmuseo in Helsinki during the Toikka's exhibition - thus I do not know whether they display some birds permanently.
According to its website the Corning Museum owns two gorgeous Kiikkuris (expecially the green one is amazing) - perhaps someone from this forum will have an opportunity to check if they are exhibited.
Thank you again and I look forward to seeing further inspiring ideas here. And a big thanks to Bob for this website.

Is there any permanent display of Toikka birds outside Finland?