I intended to read the rest of this thread, but I had technological difficulties.
I will add that when I sell or rehome a bird, the buyer/adopter gets practically spammed with photos of the bird from every angle. I also perform a physical exam on each bird, deworm, treat preventatively for...
Some animals do fine being inside all the time. Like fish, reptiles, arachnids, insects, small rodents, exotic birds and even house cats.
Livestock and poultry should not be kept indoors.