Black-billed Magpie (Pica pica) - General information, habits of the Black-billed Magpie, and information on the status of Black-Billed Magpies on the Great Plains. www.greatplains.org/npresource/distr/BIRDS/PLATTE/species/picapica.htm
Black-billed Magpie (Pica pica) - Identification tips, life history, distribution maps, and taxonomy on the Black-billed magpie. www.mbr-pwrc.usgs.gov/id/framlst/i4750id.html
Black-Billed Magpie (Pica pica) - Identification, range, and sounds of the Black-Billed Magpie. www.enature.com/fieldguide/showSpeciesRECNUM.asp?recnum=BD0032
