My brother has a parrot....
is all I have to say about parrots.
OTOH, we had horses when I was a kid and I find them much easier to relate to (than parrots). I used to have this one horse who could figure out how to open any gate. If he escaped he never went far, just didn't like being cooped up I guess.
As far as who is put here for the others' "use" I find the measure of a person's worth can often be determined from the amount of empathy that person is capable of having for other creatures. I think it tells you a lot about how they value other humans too.
So in erinhue's example of the carriage horses in the city looking unhappy, I'd say they probably are, depending on how hard they're worked and how they're kept when they're not working. It's not a natural or easy way of life for them to be in a crowded car filled city and further, it's just a tourist attraction - not a necessity. Not like plowing a field or pulling a wagon for commerce was a hundred years ago. Of all the uses for a horse it's probably among the least...um, useful.
And that photo is definitely photoshoped, badly, but photoshopped. Look at the horse's tail, it's a complete blur, especially at the end, then look at the girl's hair, completely different. And the coat, while the other photos of Akhal-Teke's
( a breed I had never heard of before) have a metallic sheen they also show a lot more detail. This horse is just too smooth, it doesn't match anything else in this photo.
It's possible that the yellow is the result of being framed though