just so you know macaws are usually the best candidates for free flight, they are loud, large, powerful fliers, and usually colorful. A loud and colorful bird is much easier to find than a small moderately loud bird. Caiques are small birds that all but the tiniest raptor(american kestral) will target as prey.
I have been looking into buying a caique and when I finally do I plan to free flight him/her. I haven't been able to find useful reasourves on the Internet so I was wondering if you could tell me about the free flight training process or direct me to a good website. Thanks!