Phillips, A. R.
1950. The Great-tailed Grackles of the southwest. Condor, 52:78-81, March.
Pitelka, F. A.
1948. Notes on the distribution and taxonomy of Mexican game birds. Condor, 50:113-123, May.
Ridgway, R.
1901. The birds of North and Middle America. U.S. Nat. Mus., Bull. 50(Pt. I):xxxii+715 pp., October 24.
1902. Ibid. (Pt. II):xx+834 pp., October 16.
1904. Ibid. (Pt. III):xx+801 pp., December 31.
1907. Ibid. (Pt. IV):xxii+973 pp., July 1.
1914. Ibid. (Pt. VI):xx+882 pp., April 8.