A migratory bird is a species that travels long distances between breeding and wintering grounds. This journey is often seasonal, with birds moving to warmer climates during the colder months to find food and suitable habitats. Common examples of migratory birds include swallows, geese, and hummingbirds. These birds rely on various environmental cues, such as changes in daylight and temperature, to guide their migration. They may travel thousands of miles, often returning to the same locations each year. Migration is crucial for their survival, as it allows them to access resources that are not available in their breeding areas during winter.