Ropinson & Kuioss : Birds of West Sumatra. 229 
The egg is nearly globular and of a dirty white colour. 
One of the Buo birds (No. 3735) was caught on its nest 
with the aid of a snare. 
The bird utters at night a call which sounds like 
“ tuk-tuk-tuk-tuk-tuk ” repeated in quick succession. 
64. Huhua sumatrana sumatrana (Raffles). 
Ree Klee 24: 
é, @. Taluk, Buo, Padang Highlands, 240 M. 
é. Aur, Kumanis, Padang Highlands, 200 M. 
é imm. Fort de Kock, Padang Highlands, 920 M. 
?, ¢ juv., adult unsexed, juv. unsexed. Andalas, 
Tanjung, Padang Highlands, 720 M. 
g juv. Kubu Krambil, Batipuh, Padang High- 
lands, 600 M. 
é. Baso, Agam, Padang Highlands. 
Iris sepia brown or yellow, bill wax yellow, cere pale 
yellow, sometimes with a greenish cast, feet pale yellowish 
grey, claws black. 
The immature birds have a brown iris, bill, cere and 
feet are lighter in colour than in the adults, claws black. 
Wings, ¢ 330, 345, 351; @ 346, 350; unsexed adult, 
326 mm. 
Young birds are white, banded with brown. The adult 
colour first appears with the flight feathers of the wings 
and the rectrices, next on the rump. 
This owl is always met in pairs and is not uncommon, 
but less numereus than Ketupa ketupa; it has the same 
nesting habit as the latter species, choosing for its laying 
place the fern Asplenium nidus (Linn.) and using no nest 
material. I saw three of these nests, containing a single 
nestling each. Natives assured me, that this owl sometimes 
rears two young at a time, but I very much doubt this 
statement. These owls feed on birds and small mammals, 
especially rats. 
Strix orientalis Horsf., being preoccupied by Strix 
orientalis Shaw, the species must bear Raffles’ name and 
the Java bird if distinct will be Huhua sumatrana 
strepitans (Temm.). The Banka Id. bird (minor Schlegel) 
does not seem to differ from the Sumatran one. 
65. Otus bakkamoena lempiji (Horsf.). 
Pisorhina lempiji R & K., I, p. 125. 
36,22. Fort de Kock, Padang Highlands, 920 M. 
?. Buo, Padang Highlands, 280 M. 
6 juv. Padang Town 
