10 Dollars - Elizabeth II 4th Portrait - Little Spotted Kiwi, Silver Proof

The Little Spotted Kiwi is functionally extinct on the New Zealand mainland — every surviving bird exists on predator-free offshore islands or within fenced sanctuaries, the result of a deliberate recovery program that began with a relic population on Kapiti Island. By 2018, the total wild population had recovered to roughly 1,600 individuals, an unusual conservation success story given how close the species came to complete elimination by introduced mustelids and rodents.