Chestnut-collared Longspur Calcarius ornatus


Anstey, D. A.; Davis, S. K.; Duncan, D. C.; Skeel, M. 1995. Distribution and habitat requirements of eight grassland songbird species in southern Saskatchewan, Regina, USA.

Bird, J.P., Martin, R., Akçakaya, H.R., Gilroy, J., Burfield, I.J., Garnett, S.G., Symes, A., Taylor, J., Şekercioğlu, Ç.H. and Butchart, S.H.M. 2020. Generation lengths of the world’s birds and their implications for extinction risk. Conservation Biology 34(5): 1252-1261.

Committee on the Status of Endangered Wildlife in Canada (COSEWIC). 2019. COSEWIC wildlife species assessments (detailed version) November 2019. Available at: (Accessed: 14/02/2020).

Davis, S. K. 2004. Area sensitivity in grassland passerines: effects of patch size, patch shape, and vegetation structure on bird abundance and occurrence in southern Saskatchewan. The Auk 121: 1130-1145.

Davis,S. K.; Ludlow, S. M.; McMaster, D. G. 2016. Reproductive success of songbirds and waterfowl in native mixed-grass pasture and planted grasslands used for pasture and hay. The Condor: Ornithological Applications 118: 815-834.

Ellison, K.; McKinnon, E.; Zack, S.; Olimb, S.; Sparks, R.; Strasser, E. 2017. Migration and winter distribution of the Chestnutcollared Longspur. Animal Migration 4(1): 37-50.

Environment and Climate Change Canada. 2016. Action plan for multiple species at risk in southwestern Saskatchewan: South of the Divide. Species at Risk Act Action Plan Series. Environment and Climate Change Canada, Ottawa, Ontario.

Environment and Climate Change Canada. 2018. Amended Recovery Strategy for the Chestnut-collared Longspur (Calcarius ornatus) in Canada. Species at Risk Act Recovery Strategy Series. Environment and Climate Change Canada, Ottawa, Ontario.

Hill, D. P.; Gould, L. K. 1997. Chestnut-collared Longspur. In: Poole, A.; Gill, F. (ed.), The birds of North America, No. 288, pp. 1-20. The Academy of Natural Sciences, Philadelphia and the American Ornithologists' Union, Philadelphia and Washington, DC.

IUCN. 2020. The IUCN Red List of Threatened Species. Version 2020-3. Available at: (Accessed: 10 December 2020).

Lloyd, J. D.; Martin, T. E. 2005. Reproductive success of chestnut-collared longspurs in native and exotic grassland. The Condor 107: 363-374.

Longcore, T.; Rich, C.; Mineau, P.; MacDonald, B.; Bert, D.G.; Sullivan, L.M.; Mutrie, E.; Gauthreaux Jr., S.A.; Avery, M.L.; Crawford, R.L.; Manville II, A.M.; Travis, E.R.; Drake, D. 2013. Avian mortality at communication towers in the United States and Canada: which species, how many, and where? Biol. Conserv. 158: 410-419.

Maher, M. J. 1973. Birds: I. Population dynamics. Canadian Com. Internl. Biol. Prog., Matador Project Tech. Rep. No. 34.

Meehan, T. D.; LeBaron, G. S.; Dale, K.; Michel, N. L.; Verutes, G. M.; Langham, G. M. 2018. Abundance trends of birds wintering in the USA and Canada, from Audubon Christmas Bird Counts, 1966-2017, version 2.1. New York, New York, USA

NABCI. 2016. The State of North America’s Birds 2016. In: Environment and Climate Change Canada (eds). Ottawa, Ontario.

Ng, C. 2017. Proximity to conventional oil and gas development is associated with reduced parental care in chestnut-collared longspurs (Calcarius ornatus). Faculty of Graduate Studies, University of Manitoba.

Ng, C.; Des Brisay, P. G.; Koper, N. 2019. Chestnut-collared longspurs reduce parental care in the presence of conventional oil and gas infrastructure, roads, and industrial noise. Animal Behaviour 148: 71-80.

Owens, R. A.; Myres, M. T. 1973. Effects of agriculture upon populations of native passerine birds of an Alberta fescue grassland. Canadian Journal of Zoology 51: 697-713.

Pardieck, K. L.; Ziolkowski Jr., D. J.; Lutmerding, M.; Hudson, M. A. R. 2018. North American Breeding Bird Survey Dataset 1966 - 2017, version 2017.0. U.S. Geological Survey, Patuxent Wildlife Research Center Available at:

Partners in Flight Science Committee. 2013. Population Estimates Database, version 2013. Available at: (Accessed: 09/07/2015).

Partners in Flight. 2019. Avian Conservation Assessment Database, version 2019. Available at:

PCAP. 2019. Guide for managing optimal habitat attributes: Chestnut-collared Longspur (Calcarius ornatus). Saskatchewan Prairie Conservation Action Plan. Available at: (Accessed: 14/02/2020).

Pool, D.B., Panjabi, A.O., Macias-Duarte, A. and Solhjem, D. 2014. Rapid expansion of croplands in Chihuahua, Mexico threatens declining North American grassland bird species. Biological Conservation 170: 274-281.

Rich, T.D., Beardmore, C.J., Berlanga, H., Blancher, P.J., Bradstreet, M.S.W., Butcher, G.S., Demarest, D.W., Dunn, E.H., Hunter, W.C., Inigo-Elias, E.E., Martell, A.M., Panjabi, A.O., Pashley, D.N., Rosenberg, K.V., Rustay, C.M., Wendt, J.S. and Will, T.C. 2004. Partners in flight: North American landbird conservation plan. Cornell Lab of Ornithology, Ithaca, NY.

Rosenberg, K.V.; Kennedy, J.A.; Dettmers, R.; Ford, R.P.; Reynolds, D.; Alexander, J.D.; Beardmore, C.J.; Blancher, P.J.; Bogart, R.E.; Butcher, G.S.; Camfield, A.F.; Couturier, A.; Demarest, D.W.; Easton, W.E.; Giocomo, J.J.; Keller, R.H.; Mini, A.E.; Panjabi, A.O.; Pashley, D.N.; Rich, T.D.; Ruth, J.M.; Stabins, H.; Stanton, J.; Will, T. 2016. Partners in Flight Landbird Conservation Plan: 2016 Revision for Canada and Continental United States. Partners in Flight Science Committee.

Sauer, J. R., Hines, J.E., Fallon, J.E., Pardieck, K.L., Ziolkowski, Jr., D.J. and Link, W.A. 2016. The North American Breeding Bird Survey, results and analysis 1966-2015. In: USGS Patuxtent Wildlife Research Center (ed.). Laurel.

Shaffer, J. A.; Buhl, D. A. 2015. Effects of wind-energy facilities on breeding grassland bird distributions. Conservation Biology 30(1): 59-71.

Shaffer, J. A.; Igl, L. D.; Goldade, C. M.; Dinkins, M. F.; Johnson, D. H.; Euliss, B. R. 2019. The effects of management practices on grassland birds—Rates of Brown-headed Cowbird (Molothrus aterThe effects of management practices on grassland birds, U.S. Geological Survey Professional Paper 1842, 24 p.

Smith, A. C.; Hudson, M-A. R.; Aponte, V.; Francis, C. M. 2019. North American Breeding Bird Survey – Canadian Trends Website, Data-version 2017. Environment and Climate Change Canada, Gatineau, Quebec. Available at: (Accessed: 14/02/2020).

Sutter, G. C.; Davis, S. K.; Duncan, D. C. 2000. Grassland songbird abundance along roads and trails in southern Saskatchewan. Journal of Field Ornithology 71: 110-116.

Wilson, S.; Smith, A. C.; Naujokaitis-Lewis, I. 2018. Opposing responses to drought shape spatial population dynamics of declining grassland birds. Diversity and Distributions 24(11): 1687-1698.

Yoo, J.; Koper, N. 2017. Effects of shallow natural gas well structures and associated roads on grassland songbird reproductive success in Alberta, Canada. PloS one 12(3): p.e0174243.

Further resources

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Media resources

Recommended citation
BirdLife International (2022) Species factsheet: Calcarius ornatus. Downloaded from on 23/05/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 23/05/2022.