Geographical distribution of Smith's longspur.     Breeding  Migration  Nonbreeding
Briskie, J. V. (2009). Smith's Longspur (Calcarius pictus), version 2.0. In The Birds of North America (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi-org.acces.bibl.ulaval.ca/10.2173/bna.34
Cephas