Peterson Backyard Birds is a great free App for anyone interested in bird watching.
And...petersonguides.com has downloadable checklists of birds you can see each week in every US, and Canadian county!
http://petersonguides.com/mobile/birdfinder.html
Isn't it strange how so many people have names that fit their work?
Roger Tory Peterson...tory is the Japanese word for bird!
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