I know bird parks are a regular thing in Europe (especially in Germany). But how common are they exactly in the US of A? In Canada we only have a handful of facilities dedicated to displaying largely only birds (Bird Kingdom in Niagara Falls, a Bird of Prey Center in Southern Alberta and a Bird of Prey Center on Vancouver Island are the only three I'm aware of). Well and I suppose a parrot sanctuary in British Columbia, but their a little...different....for lack of better works. I know of the Tracy and National Avaries, but outside of those two, how many "bird only" facilities are there? I'm not looking for strictly AZA or ZAA either, anything that would constitute a self sustaining public display facility for mainly birds where people pay for admission works for me!