What is the role of humans in animal migration?

Many animal species migrate under certain environmental conditions or at a certain stage in their life cycle. For example, some species of birds fly away to warm regions before the onset of cold weather. This is due to changing environmental conditions. Anadromous fish migrate to spawn eggs. This is already related to reproduction. Humans can cause some animals to migrate. This is mainly the displacement of animals from their natural habitat. Many species die because of this.