Whilst cruising on another board I read that someone had visited a Parrot sanctuary while on vacation in Holland and how very impressed they were with it.
They did not have a link to the place so I dug a little bit and found it.
This place looks very well run and if I ever get the chance to go back to Europe on a visit it would definately be worth a side trip.
http://www.papegaai.org/
Top right hand corner of the site is a British flag for the english version.
Maybe a place to put on your itinerary if you plan to head over that way one day.