My cockatoo's feathers were almost fully grown out, and I was working on recall training. Last weekend I saw a bunch of "lost parrot" posters and I freaked out and clipped my bird's wings. I knew already that clipped birds can still be carried away by wind, but I worried anyway. I also wanted to harness train my bird before allowing flight, because she spends a lot of time with me, even outdoors.
Watching that clipping video broke my heart. It even looks barbaric. My cockatoo is trained to "assist" with her grooming so it wasn't as traumatic looking but still, this article has convinced me to not clip her wings again, and avoid any accidents through training and being a responsible bird owner, rather than simply clipping and feeling a false sense of security.
As a side note, my cockatoo is TERRIFIED of your training perches, but my Ringnecks love them! Little by little I am getting my cockatoo comfortable with sitting on them. Thanks for making such a handy product