Migratory birds are species that travel long distances between their breeding and wintering grounds. This journey, known as migration, often occurs seasonally, with birds flying to warmer climates during the colder months to find food and suitable nesting sites. Common migratory birds include swallows, geese, and ducks, which rely on specific routes and landmarks to navigate. These birds typically travel in flocks, using the energy-efficient V-formation to reduce wind resistance. Migration is driven by changes in daylight, temperature, and food availability. Many migratory birds return to the same locations each year, demonstrating remarkable homing abilities and instincts.