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Range DescriptionAnthus spragueii breeds relatively commonly in grasslands of south-east Alberta, southern Saskatchewan, south-west Manitoba and occasionally southern British Columbia, Canada, and north and central Montana, North Dakota, and locally South Dakota, casually to north-west Minnesota, USA (Prescott 1997, Prescott and Davis 1998, Robbins and Dale 1999). It winters throughout southern USA and northern Mexico to Guerrero and Veracruz (Prescott and Davis 1998). The population has declined annually by 3.9% since 1966 (Prescott 1997, Prescott and Davis 1998, D. R. C. Prescott in litt. 1999), but the most significant declines probably occurred in the late 19th and early 20th centuries (Robbins and Dale 1999). In the USA, the decline was greatest (7.8% per year) during the 1960s and 1970s, but in Canada, the annual decline rate has slowed to 3.6% since 1980 (Sauer et al. 2007).