Northern Pintail

 

References

 

Ballard, B.M. 2004, April. Diet and Nutrition of Northern Pintails Wintering Along the Southern Coast of Texas. Journal of Wildlife Management, Vol. 68, Issue 2, p371-382.

Bent, A.C. 1962. Life Histories of North American Wild Fowl. Dover Publications, New York, New York, USA.

BirdLife International (2009). Species factsheet: Anas acuta. Downloaded from < URL: http://www.birdlife.org>. Accessed 28 March 2010.

Collucy, John M. Understanding Waterfowl: Flying Machines. http://www.ducks.org/>. Accessed April 20, 2010.

Cornell Lab of Ornithology 2009. Northern Pintail. http://www.allaboutbirds.org>. Accessed 28 March 2010.

Davis, Brian. Understanding Waterfowl – The Scoop on Bills. http://www.ducks.org/>. Accessed April 20, 2010.

Delacour, J. 1956. Waterfowl of the World. Country Life Limited, London, Great Britain.

Johnsgard, P.A. 1975. Waterfowl of North America. Fitzhenry & Whiteside Limited, Don Mills, Ontario, Canada.

Krapu, G.L. 1974, April. Feeding Ecology of Pintail Hens During Reproduction. The Auk, Vol. 91, No. 2, p278-290.

Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2008. The Animal Diversity Web (online). Accessed April 08, 2010 at http://animaldiversity.org.

Palmer, R.S. 1976. Handbook of North American Birds. Yale University Press, New Haven, Connecticut, USA.