Wings without conspicuous white markings[37] Group C.
Group A.—Golden Warblers.
Rump and crissum without rufous markings Series I.
Rump and crissum with rufous markings Series II.
Series I.
Prevailing color rich yellow, shaded on upper parts with olive-green. ♂ with streaks of chestnut across the breast and along the sides, and with or without a greater or less tinge of the same on the crown. ♀ with the streaks beneath obsolete or entirely wanting; no rufous on crown. Juv. paler and duller than the ♀, sometimes quite ashy.
A. Tarsus less than .65 of an inch. Outer webs of tail-feathers with yellow predominating.
1. D. æstiva. Crown generally pure yellow, sometimes with only a tinge of rufous; lower webs of wing-coverts and tertials pure yellow; rump and upper tail-coverts much mixed with the same. Wing-formula,[38] 1 = 2, 3; wing, 2.60; tail, 2.05; bill, from nostril, .30; tarsus, .62. Hab. Entire continent of North America; in winter south to Bogota and Cayenne; Trinidad (only locality in West Indies).
B. Tarsus not less than .70 of an inch. Outer webs of tail-feathers with dusky predominating.