1. Nest selection by red-headed woodpeckers across three spatial scales in an urban environment;Anderson;Urban Ecosyst.,2016
2. European starling sturnus vulgaris;Barndt,2006
3. Once There Were Greenfields;Benfield,1999
4. BirdLife International, 2018. Melanerpes erythrocephalus. The IUCN Red List of Threatened Species 2018. Available at https://www.iucnredlist.org/species/22680810/131390783.
5. Birds and butterflies along urban gradients in two ecoregions of the United States: is urbanization creating homogeneous fauna?;Blair,2001