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3. Atlantic Flyway Council (2003) Atlantic Flyway Mute Swan Management Plan 2003–2013. Prepared by the Snow Goose, Brant, and Swan Committee, Atlantic Flyway Technical Section, Atlantic Flyway Council. Northeast Coordinated Bird Monitoring website. www.nebirdmonitor.org . Accessed 13 Mar 2009
4. Bull J (1964a) Birds of the New York area. Dover Publication Inc., New York
5. Bull J (1964b) Birds of New York State. Doubleday Natural History Press, Garden City