I can confirm that most birds have a detectable amount of wiring behind the eyes - blinking lights and buttons and sliders and frizzy things that spark and chirp and beep. They also have a lot of soul that can communicate with ours because the programming is fairly compatible. Vultures are clever and curious, swans are clear and lawful, chickens have a lot of personality, caged parrots are dissociated and disinherited and frankly worrying, falconry-trained birds of prey are tremendously businesslike.
And owls are absolutely lovely beasts with their own irreplaceable validity. but they are basically stuffed with polyester fiberfill. They have one button, like a child's toy dinosaur that opens and closes its mouth when you press the back of its head. And it isn't even a sophisticated electronic button it's just a lever that rocks back and forth to make the claws open and close. I think they may have actually evolved independently from sponges. Their skulls simply exist to create holes that funnel sound and light, and as a place to hang a giant hinged beak. An owl is just an empty tube like a windchime that the wind whistles through, and you can drop meat down it. They use the meat to generate feathers, and then emit the bones in pressed little packages like those machines that flatten a penny and stamp it with the logo of a theme park. I think that's the gist of it - most birds are electronics of varying levels of sophistication, but owls are just a system of levers and pulleys. No elevator music in those skulls, just the wind echoing through empty caverns of slightly irritating design. Absolutely fantastic.