Given that the human religion in the MGE universe seems to have a strong resemblance to Christianity, and that most wyverns are born and raised alongside humans, and that they usually serve as aerial mounts (and attack helicopters) for human military forces in their fight against the demon lord, go figure.
Of course! But given it's already as cold as it is, just... just don't fly too high, okay? Regardless how you see it, "Froze to death on Christmas Eve when flying with his girlfriend" is not something I need to have on my headstone.
Hey? Why don't you fly with me during this holy night?