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Indeed , even their remiges are white , while these feathers are black in almost all birds ( even birds that are predominantly white , such as the Bali Myna ) because melanin makes them more resilient and thus improves flight performance .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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