Just like us!
They become naturalized as they are trafficked so intensively -- escapees link up with each other. Though from different parts of the world, they "recognize each other as parrots."
Do the parallels ring a loud bell in your head, especially if you are a refugee, or an African American descended from slaves?
See pictures on this site of scarlet macaw flying over Dutch rooftops and a sulfur crested cockatoo in a tree in Singapore.
The report concludes so far these immigrants have survived by flocking with other birds, not just other parrots, and have not had any adverse affect other than waking suburbanites with their loud cries.
Bravo survivor birds!
See --
http://www.cityparrots.org/
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https://www.google.com/search?client=firefox-b-1-d&q=Famous+Chinese+tenors#fpstate=ive&vld=cid:12005ab7,vid:_d4ap5I_tmk,st:0
