Though most raveners are created via ritual by followers of the One-Winged God, they are not enslaved. Traditions states they are set free to bring blight, famine, and drought to the world. Often made in small groups, raveners live in flocks in barren wastelands on the eastern coast of Ansulym. They fly along highways and coastlines and attack victims, waiting until just after their victims have fed. Each flock is led by a leader called a vyrek.

Unlike many other abominations, raveners often form their own new raveners. When a new ravener is spawned, they are left near a civilized area. If they can hunt and feed well, they will live long enough to seek out their own flock. If they fail, they usually are killed by those they seek to feed off of. Once they join a flock, they are usually forced to be a scout, the most dangerous role. Eventually, they will gain enough strength or respect to take on a different role in the group. The most common roles are frailthing, hunter, and priest. As they do not have clothing, sex, or genders of any kind, roles in the flock tend to focus on where they will find their next victim.

Each flock views other flocks as competition, and they often clash with one another. Battles are not uncommon, and they will commonly take slaves. Slaves can earn a spot in the flock if they prove useful, but most end up just being devoured. Raveners are extremely territorial.

Because water is a danger to them, they have burrows they use to hide from the rain. These burrows are dug into solid rock formations that stand above ground level so that the rain does not pour into them. Because they live in dry wastelands, this is rare, but it is enough of a danger that they live in fear of it. Clouds are viewed as harbingers of death.

If a ravener finds themself outside the wasteland, they are either very powerful and can handle the moisture, or they are panicked and probably going to die.