Ecological niche models for Cardinalis cardinalis. A) Locality Records: field observations (Avian Knowledge Network, orange hatch marks); museum specimens (ORNIS, blue circles), records used to build ecological niche models (red triangles) B) Present-day C) Post-glacial D) Last Glacial Maximum. Dotted and solid lines show northern extent of igenus and cardinalis during the Last Glacial Maximum.
Smith et al. BMC Evolutionary Biology 2011 11:136 doi:10.1186/1471-2148-11-136