22 
Birds of Celebes: Falconidae. 
“Sikip-batta-batta”, Minahassa, Meyer e 2. ' - 
“Sikep abu-abu”, Manado, Guillem-, b 3. 
“Sikep werreng selak”, Alfurous, Minahassa (Nat. Coll.). 
Figures and descriptions. Schlegel d II, d 1, d 5; Bonaparte a i ; Kaup e 1\ Sharpe 6i; 
Gurney f 1\ Briiggem. h 2, 
Adult male. Above slate-grey, blacker on the upper tail-coverts ; quills above blackish, notched 
on the inner webs towards the base of the feathers with white; wing below and 
under wing-coverts white, free end of wing below grey; tail black, marked on' 
the inner webs of the feathers with three rows of large white spots, intervals of 
about 25 mm separating the rows; on the' outer webs of the feathers almost oblite-' 
rated brownish spots corresponding to the white ones are just discernible; tail narrowly 
tipped with white, mainly confined to the inner webs; ear-coverts smoke-grey, paler 
on chin and throat; below rufous vinaceous-cinnamon, paling into whitish on thighs, 
flanks and under tail-coverts (cJ^, Tomohon, Minahassa, 7. IV. 94: P.&B. Sarasin); 
bill and cere above the nostrils black; cheeks and orbits orange-yellow; feet 
deep orange-yellow; iris chrome-yellow (Wall. 2). 
Young. Head and neck dark brown with ferruginous borders to the feathers; entire 
upper surface dark cinnamon-rufous, tail varied with black — the rufous predo- 
minating on the outer webs, the black on the inner — and marked as in the adult 
with three rows of large wliite spots on the inner webs, and tipped on the inner 
webs with white; under surface fulvous white, marked with long stripes of blackish 
brown on the breast and sides, and with a narrow dark streak down the middle of 
the throat; under wing-coverts and base of wing fulvous white ; quills below 
reddish, marked on inner webs towards the bases of the feathers with short bars of 
blackish not extending completely across the web. (Manado,^Nr. 6733). 
Changing plumage. Another specimen is in a stage midway between the above described young 
plumage and that of the adult: middle parts of upper surface slaty grey as in the 
■' adult, with some cinnainon-rufous tipped feathers about the occiput and mantle; first 
prhpary and one or two of the secondaries cinnamon -rufous, the rest dark slaty; 
shoulders and scapulars cinnamon -rufous .varied with slaty; breast vinaceous-cinna- 
mon varied with a few broad streaks of dark brown, particularly on the left side of 
the specimen (Tondano, Aug. — Sept. 1892: Nat. Coll. — C 10790). 
A very similar example in process of assuming the adult dress is in the Sarasin 
Collection. (See plate). “Iris, malar skin, and feet yellow; hill black” hum., Kema, 
31. July 1893). ' 
Measurements. 
Wing 
Tail 
Tarsus 
Culmen 
from cere 
a. (Nr. 8150) Manado 
170. 
148 
55 
— 
h. (Nr. 6731) ad. Manado 
164 
146 
52 
14 
c. (Nr. 6732) ad. Manado . 
180 
148 
56 
16 
d. (c 10848) ad. Manado, Aug. — Sept. 92 (Nat. Coll.) . . 
165 
145 
55 
15 
e. (c 10849) ad. Manado, Aug. — Sept. 92 (Nat. Coll.) . . 
164 
150 
51 
15 
f. (c 10790) vix ad. Tondano, Aug. — Sept. 92 (Nat. Coll.) 
172 
150 
52 
14.5 
g. (Nr. 6733) juv. Manado 
160 
138 
49 
13.5 
h. (c 10850) juv. Manado, Aug. — Sept. 92 (Nat. Coll.) . . 
164 
144 
51 
15 
(Sarasin Coll.) (V ad. Tomohon, N. Cel. 7. April 94 
155 
130 
53 
12.5 
j. (Sarasin Coll.) $ ad. Masarang, N. Cel. 9. Oct. 94 
166 
141 
54 
14 
k. (Sarasin Coll.) (J* vix ad. Kema, N. Cel. 31. July 93 
169 
140 
51 
15 
1. (Sarasin Coll.) (V juv. Kema, N. Cel. .13. Sept. 93 
173 
136 
53 
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