Indigo Bunting - Songbird Extraordinaire!
- Migration and breeding biology of Passerina cyanea.
- http://birding.about.com/library/weekly/aa071997.htm

Passerina cyanea (Indigo Bunting)
- Geographic range, physical description, food habits, and behavior of this bird. With photos.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Passerina_cyanea.html

Indigo Bunting (Passerina cyanea)
- Photo, range maps, and facts on this bird's habitat and diet.
- http://www.nenature.com/IndigoBunting.htm

Lazuli Bunting (Passerina amoena)
- Brief fact sheet on this species' displays, nesting, diet, and conservation status.
- http://www.stanfordalumni.org/birdsite/text/species/Lazuli_Bunting.html

Varied Bunting (Passerina versicolor)
- Facts on this bird's habitat, nest location, breeding, and identifying characteristics.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i6000id.html

Painted Bunting (Passerina ciris)
- Photo plus description of range.
- http://www.greglasley.net/paintedbunt.html