I kept a few exotic birds for more than 15 years (rainbow lorikeet, eclectus parrot, etc.), and as long as you meet their basic needs for secure shelter, clean water, correct diet, and an annual avian vet checkup they are quite self sufficient and happy. The birds at Parrotville and very well cared for and live in an environment far superior to most homes. When we visited we did not see anything that concerned us. Just people enjoying these beautiful birds and the birds enjoying their visitors.
Interesting...always thought it had to do more with denying the animals their natural habitat for the entertainment of us humans, as these same folks were equally not big fans off city zoo's for this same reason. We did some research about doing a dolphin encounter and found that there are many folks that feel strongly against animal encounter experiences for the reason stated above. We did end up going and it was a wonderful experience, but it was a mixed emotion for me. The info packages we read suggest that the dolphins were well cared for in their captive habitat, but it did leave me questioning some things. Thanks for the feedback.