References (cited in order of occurrence)

1.   Byerly, Tracy. 2000. "Anas rubripes" (On-line), Animal Diversity Web.  Retrieved April 01, 2004 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Anas_rubripes.html.  

2.   Dazenbaker, Mike. American Black Duck.  Retrieved March 23, 2004 from search engine Google   http://www.avesphoto.com/website/NA/species/DUCABK-1.htm

3.  American Black Duck.  Retrieved on March 25, 2004 from search engine Yahoo.                                                                                        http://www.mbr-pwrc.usgs.gov/Infocenter/i1330id.html

4. Biological Data and Habitat. Retrieved April 2, 2004 from search engine Yahoo.     http://www.fs.fed.us/database/feis/wildlife/bird/anru/biological_data_and_habitat_requirements.html

5.   Wildlife Disturbance and Occurrence.  Retrieved April 2, 2004 from search engine Yahoo.  http://www.fs.fed.us/database/feis/wildlife/bird/anru/wildlife_distribution_and_occurrence.html

6. American Black Duck.  Retrieved on March 27, 2004 from search engine Google.                                    http://www.nenature.com/AmericanBlackDuck.htm

7.  American Black Duck Information. Retrieved on March 30, 2004 from search engine Google.                   http://www.archerysociety.org/blackduckInfo.html