Why do wolves howl?

Wolves communicate in a number of ways. They use body language, scent marking and varied vocalization to express themselves. Wolves howl to communicate vocally with over long distances. They can hear one another howl up to 10 miles away in open terrain! Wolves can howl to locate other wolves, advertise the size of their pack or territory, to warn other family members of danger, and more. Just like us, each wolf has a unique voice and when every member of the pack joins in, the individual howls and their harmonies give the listener the impression that pack is larger than it actually is. Ambassador wolf Zephyr has the highest pitch howl in his pack. What do you suppose he’s saying?