8006
Females limit the number of mating bouts , though time between successive bouts is determined by males ( known as " bucks " Colonies exist throughout England south of Derbyshire , and the population continues to grow .
 location: England; location: Derbyshire
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: England; location: Derbyshire