Pattishall, Abigail., Cundall, David.  2009, June.  Habitat Use by Synurbic Watersnakes (Nerodia sipedon).  Herpetologica, vol. 65, issue 2, pp. 183-198.

Pattishall, Abigail., Cundall, David.  2008, December.  Spatial Biology of Northern Watersnakes (Nerodia sipedon) Living along an Urban Stream.  Copeia, vol. 2008, issue 4, pp. 752-762.

Pattishall, Abigail., Cundall, David.  2008.  Dynamic changes in body form during swimming in the water snake Nerodia sipedon.  Zoology, vol. 111, issue 1, pp. 48-61.

Marshall, John Clark Jr.  2008.  Population genetics and landscape modeling in water snakes.  Dissertation Abstracts International, vol. 69, issue 9, suppl. B, 96 p.

Roth, aTC., Greene, aBD., Taylor, CM.  2006, September.  Movement Patterns and Home Range Use of the Northern Watersnake (Nerodia sipedon).  Copeia, vol. 2006, issue 3, pp. 544-551.

Minnesota DNR.  Last updated 2010.  Northern Water Snake.  Retrieved from

Minnesota DNR.  Northern water snake range map [picture].  Retrieved from

Sheldon, A.B.  Coiled banded water snake [photograph].  Retrieved from

Beck, Virgil.  Bluegill [photograph].  Retrieved from

Nedrelo, Dan.  Leopard Frog [photograph].  Retrieved from

Laubenstein, Karen.  Bald Eagle [photograph].  Retrieved from

Hollingsworth, John and Karen.  Gray Wolf [photograph]. Retrieved from

Durso, Andrew.  Young snake [photograph].  Retrieved from

Willson, JD.  Close up head shot [photograph].  Retrieved from

Willson, JD.  Dark snake on rivers edge [photograph].  Retrieved from

Gillilland, Merritt.  Obtained April 10, 2010.  Nerodia sipedon.  Retrieved from  Obtained April 8, 2010.  Nerodia sipedon – Northern Water Snake.  Retrieved from

OSSM Vertebrage Zoology.  Obtained April 13, 2010.  Vertebrate Zoology Lecture Notes.  Retrieved from

Cossel Jr, John.  Obtained April 15, 2010.  Family: Colubridae.  Retrieved from


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