Peucæa æstivalis.
10245 ♂
Gen. Char. Bill moderate. Upper outline and commissure decidedly curved. Legs and feet with the claws small; the tarsus about equal to the middle toe; the lateral toes equal, their claws falling considerably short of the middle one; the hind toe reaching about to the middle of the latter. The outstretched feet reach rather beyond the middle of the tail. The wing is very short, reaching only to the base of the tail; the longest tertials do not exceed the secondaries, while both are not much short of the primaries; the outer three or four quills are graduated. The tail is considerably longer than the wings; it is much graduated laterally; the feathers, though long, are peculiarly narrow, linear, and elliptically rounded at the ends.
Color beneath plain whitish or brownish, with a more or less distinct dusky line each side of the chin. Above with broad obsolete brown streaks or blotches. Crown uniform, or the feathers edged with lighter.
Species and Varieties.
Common Characters. A light superciliary stripe, with a brownish one below it from the eye along upper edge of ear-coverts (not one along lower edge of ear-coverts, as in Melospiza). A narrow blackish “bridle” along side of throat (sometimes indistinct). Crown without a distinct median stripe, and lower parts without markings. Ground-color above ashy, sometimes of a brownish cast; dorsal region and nape with brown blotches, with or without dark centres. Crown blackish-brown streaked with ashy or plain rufous. Beneath plain brownish-white, lightest on the abdomen, darker across jugulum and along sides.
A. Crown plain rufous; interscapulars without distinct black centres, and tertials without whitish border. Blackish “bridle” conspicuous. Bend of wing edged with white.
1. P. ruficeps.
Above olivaceous-ash, interscapulars with broad streaks of dull rufous, the shafts scarcely blackish. Crown bright rufous. Wing, 2.40; tail, 2.70; bill, .29 from forehead, .20 deep; tarsus, .70; middle toe without claw, .55. Hab. California (and Mexico in winter?) … var. ruficeps.
Darker, above brownish-plumbeous, dorsal streaks scarcely rufous, and with distinctly black shaft-streaks; crown darker rufous. Wing, 2.40; tail, 2.60; bill, .34 and .25; tarsus, .77; middle toe, .57. Hab. Mexico (Orizaba; Oaxaca), in summer … var. boucardi.[7]
B. Crown streaked; interscapulars with distinct black centres; tertials sharply bordered terminally with paler. “Bridle” obsolete; bend of wing edged with yellowish.