This is their color pallet. They're called Titanwings because they're Morrowseer times two in size. They're vegetarian because of the fact that because of their size they'd never be able sustain themselves by eating meat Now about the Sirenwing thing.... A Sirenwing's call only works on dragons and without the call they're pretty much defenseless. And the Tunnelwings came later let alone the fact that they live underground leaving a Sirenwing's only source of food to be.... Titanwings. And that started a war that is pretty much endless because the Titanwings are cannoning into the Sirenwings while they use their song to destroy 'em.