So far I've seen: Crows / ravens Dragonflies Hawks, maybe vultures. They fly pretty high up so I haven't gotten a good look at them I'm honestly surprised we haven't run into feral cats, dogs or horses. My guess is that most animals aren't considered relevant to the game so they're just not there. The ravens at least were included to provide warning that you're not alone. Not sure about the dragonflies and hawks unless they're going to turn out to be camouflaged robotic spies or something.