Wires, Linda R., Francesca J. Cuthbert, and D. Hamilton. 2011. The American White Pelican and Double-crested Cormorant in Minnesota in 2010: Distribution, Abundance and Population Change. Final report to the Minnesota Department of Natural Resources. http://files.dnr.state.mn.us/eco/nongame/projects/consgrant_reports/2011/swg_2011_wires_etal.pdf