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Birding the Ndumo area, South Africa

10,000 Birds

Greater Flamingos are considered cooperative breeders as fledglings are raised in a creche, in which large numbers of young are watched by multiple non-breeding adult greater flamingos. On the other hand, their preferred food is blood, and they also feed on it directly, pecking at a mammal’s wounds to keep them open ( source ).

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Rails: The Once and Future Kings of the Pacific

10,000 Birds

They often become slower breeders, and most importantly, they lose their ability to disperse, meaning they get stranded on the island they live on. In a few places mammals and humans may endure, but even there, rails will become island species, albeit ones that retain some anti-predator strategies.

Hawaii 214