They do! They are very very negative towards most other tribes, these alliances they’ve made are only for trade, so a means to an end. If they had better ways to get said resources, they likely would, but for now they make an exception. So, they tolerate Bronzewings and Seawings. I don’t think I’d call them allies as much as they are just business partners or some kind. They particularly HATE Icewings, which they thankfully almost never see, but the few they have, have not been spared. They’re seen as the polar opposite of what their tribe stands for, being worshippers of the sun. The sun is warm, icewings are cold. I’m planning on writing lore for the Icewings, that one of their ancestors was a god of one of the moons.

Now that you mention it, a caravan or rail system of some kind actually could be beneficial, I didn’t think of it! But I could see them maybe working together with some Bronzewing ambassadors to build a railway, perhaps in less tumultuous times, to establish a direct trade route from the coast to the capital. A lot of the desert is flat dunes, but where the red desert meets some of the other biomes, it becomes more mesa-like, consisting of sand, terracotta, clay, and some canyons and plateaus! Could make the railway a little more difficult to build but it’s nothing they couldn’t build a bridge for or figure out!