Feral North America Species Zoos 
10,000 Birds
JANUARY 1, 2012
Unlike North America, Germany has never had naturally occurring psittacines that went extinct, and the one we have is a true and complete invasive alien introduction. It is commonly kept in captivity and has therefore established many feral populations world-wide originating from escaped / released cage birds.
10,000 Birds
SEPTEMBER 13, 2014
Back in 2009, Tai Haku sent us a fascinating post exploring a question that ecologists worldwide grapple with: can the translocation of rare species into niches left empty by extinction be successful or justified? Photo copyright The Smithsonian’s National Zoo, taken from the Guam Rail page. . It is extinct.
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