The story I'm working on is political and military fantasy, and in their world, there are Gryphons. The Gryphons are as intelligent as humans, but cannot replicate human speech, so they communicate primarily through body language. The Gryphons are rode by soldiers, and comprise of a special military unit called the Riders. The problem is that I have is how would they house Gryphons when they are not using them? I'd imagine they'd like to fly around freely instead of being tethered to a pole or something, and due to their intelligence, they would probably find that demeaning. Also, why would Gryphons willing let humans ride them into battle? The backstory was that there was a war between humans and the gryphons because the humans were sick of being preyed on by the winged beasts, and the humans won, with the condition of the treaty that the Gryphons would have to serve humans.