Range.--"Atlantic Coast district of United States; breeding in Virginia, District of Columbia, Maryland and southern Pennsylvania (Carlisle), probably also in Delaware and southern New Jersey and in upland portions of Carolinas and Georgia; ... south in winter to Bahamas ..." (Ridgw.)
=681a. Western Yellow-throat= (_G. t. occidentalis_). Similar to No. 681d, but yellow below richer, border of mask whiter and broader.
Range.--Arid western United States; east to western portions of Great Plains, north to Montana and eastern Washington (?); west to southern California: breeding southward to northern Chihuahua and northern Lower California; southward in winter to western Mexico and Cape St. Lucas. (Ridgw.)
=681b. Florida Yellow-throat= (_G. t. ignota_). Similar to No. 681d, but yellow below more extended and deeper, sides browner; black mask wider; upperparts, especially hindhead, browner.
Range.--South Atlantic and Gulf Coast districts of United States from southeastern Virginia to Florida and westward along Gulf lowlands to eastern Texas; winters from at least coast of South Carolina southward; also in Cuba. (Ridgw.)
=681c. Pacific Yellow-throat= (_G. t. arizela_). Similar to No. 681a, but bill smaller, wings and tail shorter, color duller, whitish margin of mask narrower, yellow usually less orange; W. 2.2; T. 2.1. (Ridgw.)
Range.--"Pacific Coast district, from British Columbia southward; breeding southward to Los Angeles County, California, and eastward to Fort Klamath, Oregon; during migration to Cape St. Lucas." (Ridgw.)
=681d. Northern Yellow-throat= (_G. t. brachidactyla_). Similar to No. 681, but averaging larger; W. 2.2. _Ad._ [Male]. More yellow below, more olive-green above. _Ad._ [Female]. Usually with yellow below brighter and more extended. (Ridgw.)
Range.--Northeastern United States from northern New Jersey to Newfoundland; west to northern Ontario and eastern Dakota, and south through Mississippi Valley to upland districts of the Gulf States and east central Texas; in winter Bahamas, Mexico, and Central America. (Ridgw.)
=681e. Salt Marsh Yellow-throat= (_G. t. sinuosa_). Similar to No. 681c, but much smaller and slightly darker, especially on sides and flanks; W. 2.1. (Ridgw.)