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A bird atlas is an ornithological work that attempts to provide information on the distribution , abundance , long-term change as well as seasonal patterns of bird occurrence and usually represented in the form of map s. They often involve the use of large numbers of volunteers who help cover a large geographic region and the methods used are standardized so that the studies can be continued in the future and ensure comparison of results over time .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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