WEC-252, a 5-page illustrated fact sheet by Steve A. Johnson and Monica McGarrity, is the first of a series of documents about Florida's non-native birds and their impacts on our state’s native ecosystems and human residents. It discusses when an introduced species is considered invasive, how invasive birds impact us, and what you can do. Includes references. Published by the UF Department of Wildlife Ecology and Conservation, March 2009.
http://edis.ifas.ufl.edu/UW297