Even the Humane Society of the United States approves the keeping of budgies, a small parrot species, as pets, despite the fact no cage can offer the same amount of space of a wild budgerigar.
"Certain species, such as cockatiels, budgerigars, finches, doves, and lovebirds, can thrive as pets with proper care."I wonder how they decided this? Apparently bigger birds like parrots are 'too social', yet this video seems to show plenty of that. I guess the HSUS gets to pick which animals are dumb enough for a cage.
Watch a flock of budgies that are so desperate for water, they refuse to evade a falcon eying them for dinner.
Of course, captive budgies enjoy falcon-attack free comfort with an always available water source (seed hulls floating in it, there might be), but that's not 'natural', so that's bad.
In seconds, all of these birds soar a distance longer than the space available to them in captivity, yet you don't hear this tedious criticism made against 'wild' animals in captivity often when these birds are involved. We know so little about animal 'intelligence', it is shocking to see the HSUS basically imply they are 'uncomplex', but it all stems from the irrational cognition biases of the obviously complex human species.