Rose-breasted Grosbeak (Pheucticus ludovicianus)
- Image, sound recording, and facts about this bird's habitat and nesting.
- http://www.birding.com/topbirds/9519rbg.asp

Rose-breasted Grosbeak
- Photographs and description of this North American species, the sounds it makes, its conservation status and further information.
- http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Rose-breasted_Grosbeak.html

Black-headed Grosbeak (Pheucticus melanocephalus)
- Identification tips, range maps, photos, and taxonomy chart.
- http://www.mbr-pwrc.usgs.gov/id/framlst/i5960id.html