To get a clear picture of birds of prey, a camera lens with a focal length of more than 500mm is needed. Besides, you should be so familiar with the flying rules of the birds of prey and respond quickly that you can record the moment.

At the viewing platform, two university student volunteers were learning the basic knowledge of the migration of birds of prey. As a subtropical city, Chongqing has more than 30 species of migratory birds of prey. However, most of them are similar, so the difference between them is subtle and difficult to identify. Therefore, the monitors need to have adequate knowledge.

Birds of prey fly quite high, but they can still be spotted by bird-watchers with sharp eyes. With fuscous body feathers and white and light brown overhang on and below the tail, the image of an Aquila clanga spreading its wings was accurately captured by the bird-watching club monitor Ma Kaiyu. (Photographed by Ma Kaiyu)

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