ocr: Nocth Genttal This region contains 77 of the 121 common birds in this package. For this geographic region, you can work with more than 70 of the 121 birds in this package. Try selecting Subsets by Habitats or similar kinds of bird Songs to obtain smaller learning sets. Use Explore Mode to compare two birds, then Challenge Mode to learn to distinguish them by Song or Photo. Try it by Range to see if you really know your birds. Continue
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