A migratory journey, also known as a TREK, is a long-distance journey undertaken by animals or people. It usually involves travelling from one place to another in search of food, shelter, or a better climate. Migratory journeys are often seasonal, with animals and people travelling to different locations at different times of the year. For example, some birds migrate south for the winter and then return north in the spring. People may also undertake migratory journeys, such as when they move from one country to another in search of work or a better life.