254 NORTH AMERICAN BIRDS. 
tail 10.00-11.00, culmen 1.20-1.41, tarsus 3.70-4.70. Hab. South America, 
except northern portions. P. tharus (Mo.). Caracara.! 
b%. Scapulars, sides, belly, and middle wing-coverts plain black in adult, plain 
dull brownish in young; tail-coverts plain white. Adult: Upper half 
of head, scapulars, wings, lower back, rump, belly, sides, flanks, and anal 
region plain dull black, or brownish black ; upper back and breast black, 
barred with white; lower portion of head, neck (all round), chest, and 
tail-coverts soiled white, the chest transversely spotted with black ; basal 
two-thirds (or more) of tail white, crossed by about 13-14 narrow bars 
of dusky, these growing less distinct basally ; terminal zone of tail uni- 
form black. Young: Black of adult replaced by dull brownish, darkest 
on top of head; white and dusky areas gradually blended, those portions 
which are barred in the adult being striped with the two colors; tail as 
in adult. Length 20.50-25.00, wing 14.60-16.50, tail 8.80-10.00, culmen 
1.20-1.48, tarsus 3.20-3.75. Mest on trees, bushes, or cliffs. Hggs 2-4, 
2.36 X 1.85; ground-color cinnamon, pale umber, brownish white, or 
walnut-brown, variously marked (usually blotched or stained) with 
deeper brown (burnt-umber® chestnut, or claret-brown). Hab. Middle 
America and northern South America, south to Guiana and Ecuador, 
north to southern border of United States (Florida to Lower California). 
362. P. cheriway (Jacq.). Audubon’s Caracara. 
«@. Rump and upper tail-coverts dull brownish buff, or light isabella-color, broadly 
barred with dull brown; tail brownish buff, or pale isabella-color, with broad 
bars of grayish brown bordered by narrower zigzag bars or lines of dusky, 
the terminal dark band less than 2.00 wide. 
Adult: Upper half of head, lesser wing-coverts, secondaries, primary cov- 
erts, terminal portion of primaries, under side of wing (including axillars), 
and terminal zone of tail, plain blackish brown; ear-coverts, cheeks, and 
throat plain dirty whitish or pale brownish buffy; rest of plumage 
barred with dusky brownish and dull brownish buff or dirty brownish 
white. Young: Quills, tail, tail-coverts, head, and lesser wing-coverts 
much as in adult; rest of plumage more or less distinctly striped with 
dull brown and dirty brownish white or dull buffy, the former prevail- 
ing, and sometimes nearly uniform, on upper parts. Downy young: 
Light brownish buff, with a brown patch covering arm-wing and scapu- 
lar region, and another covering top of head. Wing 15.00-16.40, tail 
10.50-11.65, culmen 1.25-1.35, tarsus 3.50-3.75. Hab. Guadalupe Island, 
Lower California.......... 363. P. lutosus Ripcw. Guadalupe Caracara. 
Genus PANDION Savieny. (Page 224, pl. LXX., fig. 3.) 
Species. 
Adult male: Above plain dusky grayish brown, the tail more grayish, narrowly 
tipped with white, and crossed by about six or seven narrow bands of dusky ; head, 
1 Falco tharus Mo. Sp. Chil. 1782, 264, 348. Polyborus tharus StricKL., Orn. Syn. 1855, 19. 
