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The species is one of the world's rarest birds.

Brazil's conservation agency, ICMBio, told AFP that since a group of Spix's macaws arrived in the country from Germany in 2020, around 20 had been freed and only 11 had survived. 

Now all of the survivors have tested positive for circovirus, which causes beak and feather disease in parrots.

"The disease has no cure and kills the bird in most cases," ICMbio said in a statement.

Another 21 birds still in captivity at a breeding centre in the state of Bahia also tested positive.

Investigations are underway to determine the origin of the virus, which poses no danger to humans.

The film "Rio" is about a Spix macaw that is raised in captivity in the United States and returns to Brazil to try save its species.

Real-life efforts to save the parrot are more worthy of a high-stakes drama, marked by concerns over unscrupulous breeders and sales to private collectors.

The Bluesky breeding center is a partner of the German Association for the Conservation of Threatened Parrots (ACTP), which holds 75 percent of the world's registered Spix's macaws, according to ICMBio.

Brazil terminated its partnership with ATCP in 2024 after the German organization sold 26 of the birds to a private zoo in India without its consent.

Brazil has repeatedly raised concerns at meetings of CITES, the global wildlife trade regulator, over loopholes that allow for the sale of captive-bred Spix's macaws and fuel demand for the fragile species.

Aside from habitat loss, demand from private collectors drove the extinction of the bird in the wild.

ICMBio has fined the BlueSky breeding centre 1.8 million reais ($336,000) for failing to implement biosafety protocols to curb the spread of the virus.

Inspectors found "extremely dirty" bird feeders encrusted with faeces, while workers were handling the birds "wearing flip-flops, shorts and t-shirts."

fb/dw