Waiting for this moment for a long time - watching migratory birds

The migration time of migratory birds mainly depends on seasonal changes and geographical location, and is usually divided into two main stages: spring northward migration and autumn southward migration: Spring northward migration Time: Generally from early March to mid-to-late May. Features: As the temperature rises, migratory birds begin to migrate from their wintering grounds (such as southern China, Southeast Asia, and Australia) to their breeding grounds (such as northern China, Mongolia, the Russian Far East, and near the Arctic Circle). For example, around March, some early spring migratory birds have already begun to return to the north, and birds such as gray cranes and swans will usher in a migration peak in April. Autumn southward migration Time: Usually between September and November. Features: When the temperature in the north drops, migratory birds will leave their breeding grounds and migrate to warmer places in the south to spend the cold winter. In China, there will be a peak of migratory bird migration around mid-to-early November, when a large number of migratory birds can be observed passing through or staying in multiple wetland parks such as Yeyahu International Important Wetland and Nanhaizi Wetland Park. Influencing factors Climate change: In recent years, due to the impact of global warming, the migration time of some migratory birds has been advanced or delayed. For example, some species of migratory birds may start migrating northward earlier because spring arrives earlier; conversely, if the weather is still warm before the end of autumn, the time of southward migration may be delayed. Length of daylight: This is the most stable signal that triggers migratory bird migration behavior. As the length of daylight changes, the hormone levels in birds also change, prompting them to prepare for migration. Temperature: Changes in temperature also affect the migration decisions of migratory birds, especially in terms of food resource availability and habitat conditions. Environmental changes: Factors such as changes in habitat and human activities may also affect the migration routes and times of migratory birds. In short, migratory birds migrate seasonally on a large scale every year according to certain patterns, but the specific migration time and patterns may be affected by various natural and social factors. If you plan to watch migratory birds, please pay attention to the latest information released by local weather forecasts and wildlife protection departments to arrange the best bird-watching time.