YELLOW WARBLER

Across its vast range, the Yellow Warbler is a highly variable species. Forty-threesubspecies are currently recognized, and are treated geographically as three groups. The aestivagroup breeds throughout much of the U.S. and Canada, from northern Alaska, northern Yukon,northwestern and central Mackenzie, northern Saskatchewan, northern Manitoba, northernOntario, central Quebec, central Labrador, and Newfoundland, south to central Alaska, northernBaja California, though the central plateau region of Mexico to northern Guerrero, Puebla, andsoutheastern San Luis Potosi, and to central and northeastern Texas (formerly), centralOklahoma, central Arkansas, central Alabama, central Georgia, extreme northwestern SouthCarolina, and central North Carolina

Stephen J. Myers, California: Species of Special Concern (CDFG, 1998)