"A bird observatory is a centre for the study of bird migration and bird populations. They are usually focused on local birds, but may also include interest in far-flung areas. Most bird observatories are small operations with a limited staff, many volunteers and a not-for-profit educational status. Many bird observatories conduct bird ringing or bird banding (term in the United States)." - (en.wikipedia.org 26.08.2021)
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