The two major seasons that birds migrate are spring and fall. The first study that took place was in the 1960s and it was based on finding quantitative data about migratory birds. The radar that was used was a weather radar in order to figure out how birds move around. Bird cast is one of the famous bird tracking device. There are other ways to find how birds migrate by using microphones on roofs top to study birds migration and it can also record bird calls to locate them. Radar is a strong technique used to track birds. Military and weather radars can be used to track birds movement, how high and how fast they fly, also compass orientation. Weather radar can also monitor birds migration activity.
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