Cassin's Sparrow

Peucaea cassinii



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Figure 1. Distribution of Cassin's Sparrow.

Winter status in many areas is poorly known. Limits of this species’ breeding range fluctuate in response to rainfall levels, and singing males may appear north of the distribution shown when greater than average rainfall produces lush vegetative growth in normally arid shrub grasslands.

Figure 2. Annual cycle of breeding, migration, and molt in se. Arizona.

For Cassin’s Sparrow populations in southeastern Arizona.

Figure 3. Primary Songs of Cassin's Sparrow.

Three examples of Cassin’s Sparrow's Primary Songs. Individual male delivers Primary Song with enough differences to be individually identifiable (Schnase and Maxwell 1989). Prepared by the staff of the Borror Laboratory of Bioacoustics (BLB), The Ohio State University, using a Kay Elemetrics DSP 5500 Sona-Graph with an effective bandwidth of 300 Hz (200 pts transform size). A. BLB recording no. 10284 near Sonoita, Santa Cruz Co., AZ, 22 Jul 1969. B. BLB recording no. 10265 Pima Co., AZ, 18 Jul 1969. C. BLB recording no. 10281 Pima Co., AZ, 18 Jul 1969.

Figure 4. Relative abundance of Cassin's Sparrow during the breeding season in the United States.

Based on data from the North American Breeding Bird Survey, 2011–2015. See Sauer et al. (2017) for details.

Figure 5. Regional trends in Cassin's Sparrow breeding populations in the United States.

Based on data from the North American Breeding Bird Survey, 1966–2015 (Sauer et al. 2017). Data show estimates of annual population change over the range of the survey; areas of increase are shown in blue and declines are shown in red. See Sauer et al. (2017) for details.

Recommended Citation

Dunning, J. B., Jr., R. K. Bowers Jr., S. J. Suter, and C. E. Bock (2018). Cassin's Sparrow (Peucaea cassinii), version 2.0. In The Birds of North America (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA.