SWAINSON’S BUZZARD. 287 
‘ Under parts, including lining of wings, nearly uniform fawn-color (pale 
Sip SRPS brown), thickly and sharply marked with blackish-brown. 
se large dark spots, for the most part circular or guttiform, crowd 
across thè fore breast, scatter on the middle belly, enlarge to cross-bars 
wanting 
Gii pencilling along the PARE line. Quills brownish-black, the 
outer webs with an ashy shade, the inner webs tow pio the base grayish, 
pale 
their. shafts black on top, nearly white underneath. ay feathers like the 
quills, but more decidedly shaded with ashy or slate gray, and tipped with 
whitish: their numerous dark cross-bars show more plainly than those of 
the SE but are not so evident as they are in the old birds. 
dults (either sex). Upper parts dark brown, very variable in shade 
according to season or wear of the feathers, varied with paler brown, 
i ith e 
upon a lighter marbled-whitish — and the latter having broader 
and sharper dark wavy bars. These large pepe peared those of the 
tail, vary much in shade according to wear, the new feathers being strongly 
slate-colored, the old ones plain dark brown. ab w ANE never 
Male: Under parts showing a broad pectoral area of bright pai 
area contrasting sharply with the pure white throat. Other under nara 
white, aid or less tinged and varied, according to age, with light chest- 
nut. In the oldest males, this chestnut is diminished to traces, net A in 
flank- fant ai arrowheads, and the white throat is immaculate; in less 
mature examples, throat shows blackish pencilling, and the rest = the 
under parts are so o much marked with chestnut, chiefly in cross-bars, that 
n 
feathers, to brownish-black, and other under parts heavily marked with 
chestnut, chiefly in cross-bars alternating with whitish, but on the flanks, | 
and sometimes across the belly, these markings are quite blackish. The 
general tone of the under parts may be quite as dark as the pectoral area 
of the male; but it lacks uniformity, and the increased depth of color of 
the pec toral area in this case’suffices to preserve the strong contrast 
already mentioned. 
