S China's nature reserve conducts bird diversity monitoring

Photo taken on April 27, 2022 shows mangrove seedlings at Dongzhaigang National Nature Reserve, south China's Hainan Province.

Aerial photo taken on April 27, 2022 shows Dongzhaigang National Nature Reserve, south China's Hainan Province. 

Staff members and volunteers monitor birds at Dongzhaigang National Nature Reserve, south China's Hainan Province, April 27, 2022. 

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