1. Check-list of North American Birds;American Ornithologists' Union,1983
2. Avian communities and habitat associations in cities and suburbs;DeGraaf,1978
3. An urban bird community in Tucson, Arizona: derivation, structure, regulation;Emlen;Condor,1974
4. Ecological principles in the urbanization of birds;Erz,1966
5. Effects of urbanization and types of urban development on bird populations;Geis,1974