171465
While the precise range of Columbicola extinctus is not known , it is only known to live on one extant host , the Band-tailed Pigeon , and has been found on birds across its range .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None