Batrachostomus septimus Tweeddale, Proc. Zool. Soc. (1877),
542; Challenger Report, Zool. (1881), 2, pt. 8, pl. 2; Hartert,
Cat. Birds Brit. Mus. (1892), 16, 638; Sharpe, Hand-List (1900),
2, 43; McGregor and Worcester, Hand-List (1906), 50.
Basilan (Celestino); Mindanao (Murray, Everett, Koch & Schadenberg,
Bourns & Worcester, Goodfellow, Celestino).
Male.--General color rufous-brown; wings and upper parts
chestnut-rufous mixed with fine lines of lighter brown and blackish
brown, taking the form of obsolete bars on rectrices; a narrow white
band across mantle, bordered on each side with blackish brown; outer
webs of scapulars whitish, each feather with a black spot near its tip;
a wide creamy band across the fore breast, each feather tipped and
double barred with narrow lines of blackish brown, the double bars
concealed; another light band about 30 mm. posterior to this with
blackish tips but without the double bars; crissum buffy; primaries
and secondaries blackish, mixed with chestnut-rufous on outer webs;
primary-coverts nearly totally black, each of the secondary-coverts
with a large white spot at tip, preceded by a smaller black spot;
axillars buff. A male from Basilan measures: Wing, 160; tail, 121;
culmen from base, 29; width of bill at gape, 41; tarsus, 16.
Female.--Similar to the male but colors less rufescent; white collar
less sharply defined and the light webs of scapulars washed with
rufous. A female from Basilan measures: Wing, 150; tail, 114; culmen
from base, 27; width of bill at gape, 38; tarsus, 14.
This species is easily distinguished from B. javensis by its larger
size and comparatively much shorter tail, and by the sexes being
similar in their general coloration.