Centers for Disease Control and Prevention

• Steven W. Lenhart et al., U.S. Dept. of Health & Human Svcs., Histoplasmosis: Protecting Workers at Risk (Dec. 2004) (this booklet helps readers understand histoplasmosis and understand risk factors; states that the risk associated with pigeon excrement is negligible)
  http://www.cdc.gov/niosh/docs/2005-109/default.html

Journal of Clinical Microbiology

• Frank Pasmans, et al., Assessment of Virulence of Pigeon Isolates of Salmonella enterica subsp. enterica Serovar Typhimurium Variant Compenhagen for Humans, Journal of Clinical Microbiology, 2000-2002 (May 2004) (study finding that strains of salmonella found in pigeon feces are of low virulence to humans)
  http://jcm.asm.org/cgi/reprint/42/5/2000.pdf

Conservation Biology

• Dunn et al., The Pigeon Paradox: Dependence of Global Conservation on Urban Nature, Conservation Biology, 1814-1816 (Dec. 2006) (explores the idea that global conservation will dincreasingly depend on interactions with urban ecosystems and animals such as pigeons)
  http://www.birds.cornell.edu/programs/urbanbirds/celebration/GettingStarted/
  photos-and-videos/Dunn%20et%20al%202006.pdf

Columbidae Conservation

• A resource for the ecology and conservation of pigeons, one of the eight most threatened bird families. Of the 317 species of pigeon and dove, 12 (4%) species are extinct, one (0.3%) species is extinct in the wild, 59 (19%) are threatened with extinction, and 38 (12%) species are near threatened.
  http://www.columbidae.org.uk/about.html

Cornell Lab of Ornithology

• Cornell University's PigeonWatch, an international study of feral pigeon colors.
  http://www.birds.cornell.edu/programs/urbanbirds/ubs_PIWMainEN.html

United States Geological Survey

• Population trends for pigeons. The population of pigeons in New York State peaked in 1988 and has since declined.
  http://www.mbr-pwrc.usgs.gov/cgi-bin/plotpgm0.pl?/sula/jrs/bbs02/htmind/03131.ny

The Wild Bird Fund

• A New York City-based organization that provides assistance for wild birds, particularly pigeons
  http://www.wildbirdfund.com

NYC-based Pigeon and Bird Groups

• Pigeon People: http://groups.yahoo.com/group/pijnpeople

• Urban Wildlife Coalition: http://groups.yahoo.com/group/urban_wildlife_coalition_NYC

• New York City Pigeon Rescue Central: http://nycprc.org

• Manhattan Alliance for People for Pigeons: http://mapp-ny.blogspot.com

• New York Bird Club: http://www.manhattanbirdclub.com

More links coming soon...