FILE - Flamingoes feed in the popular Berg River estuary in Velddrif, South Africa, Monday Sept. 14, 2020. The alteration of weather patterns like the ongoing drought in east and central Africa chiefly driven by climate change is severely undermining natural water systems devastating livelihoods and now threatening the survival of most of the world’s famed migratory bird species. (AP Photo/Nardus Engelbrecht, File)