• Michigan Wildlife Disease Manual
Michigan Wildlife Disease Manual contains a list of diseases, a description of the disease, photos, and species affected.

• MDNR Wildlife Disease Laboratory
The Michigan Department of Natural Resources Wildlife Disease Laboratory is responsible for monitoring the health and well-being of the wildlife in the State of Michigan.

• The Merck Veterinary Manual
The single most comprehensive electronic reference for animal care information

• Bird Disease Field Manual - U.S. Geological Survey National Wildlife Health Center

• Southeast Cooperative Wildlife Disease Study (SCWDS)

• United States Geological Survey (USGS) National Wildlife Health Center

• Psittacosis Compendium 2006 Cover Letter