How are new wolf packs formed?

In wolf populations, new packs are founded constantly through young wolves leaving their parental territory and founding their own families with a partner. Many wolves migrate only 50-100 km and use the next free space available. Others are long-distance dispersers and walk impressive distances from Saxony to Belarus or northern Denmark or from Saxony-Anhalt to Austria. These migrations can be documented through genetic analyses and GPS-GSM-based telemetry. Some young wolves (in Germany especially daughters) take over the whole or parts of the parental territory when the parents grow old or one of them dies.