892 
Birds of Celebes: Sulidae. 
379. SULA LEUOOGASTER (Bodd.). 
Booby Gannet. 
• This wide-spread species seems to be smaller in size in the Atlantic than 
in the Pacific Ocean. There not being sufficient material in the Dresden Museum 
for a proper geographical study of the species, the following references bear 
only upon its occurrence in the Celebesian Province: 
a. Sula fiber (nec L.); (1) Schl., Mus. P.-B., Pelecani, 1863, 41; (2) Salvad., Ucc. Borneo 
1874, 309; (3) Briigg., Abh. Ver. Bremen 1876, V, 464; (4) Kosenberg, Malay. 
Ai-chip. 1878, 279. 
b. Dysporus sula (1) Wald., Tr. Z. S. 1872, Vni, 106; (2) Meyer, Ibis 1879, 145; 
(3) W. Bias., J. f. O. 1883, 140. 
c. Sula fusca (1) v. Mnssclienbr., N. T. Ned. Ind. 1876, XXXVI, 380. 
Sula leueogaster (Bodd.); (1) Legge, B. Ceylon 1880, 1177; (2) Salvad., Orn. Pap. 1882, 
111 , 421; (3) Meyer, Isis, Dresden 1884, 6, 57; (4) W. Bias., Ornis 1888, 633; 
(5) M. & Wg., Abh. Mus. Dresd. 1896, Nr. 1, p. 15. 
Adult. Entire upper parts, rvith tlmoat and juguluin, warm bistre-brown; remaining under 
parts white (ad., Atlantic Ocean, Nr. 11101). 
Young. Paler and greyer brown, the under parts whitish brown, instead of white (cf juv., 
Gulf of Boni, 19. I. 95: Sarasin Coll.). 
Measurements (two young examples from Celebes). Wing 395, 430 mm; tail 215, 215; tarsus 
35, 45; noiddle toe and claw c. 88; exposed cuhnen 83, 105. 
Distribution (as a species). Most of the tropical and subtropical seas of the globe. — In 
the Celebesian Province: Celebes (v. Bosenberg a 4, v. Musschenbroek cl, 
P. & E. Sarasin 5); Sangi Islands — Great Sangi and Siao (Meyer 3). 
Some half dozen examples of this Gannet have been recorded from Celebes, 
where, according to v. Rosenberg, it appears at times in flocks of 10—12, 
chasing the shoals of fish swimming near the surface. The habits of the species 
have been well described by Dr. Bryant and others (see Baird, Brewer and 
Ridgway, Water B. N. Am. 1884, II, 181; Gould, Hb. B. Austr. 1865, II, 507). 
The birds breed in colonies, and two white eggs are laid on the sand, rock, etc., 
or in a nest slovenly made of dried herbage ; the young are at first naked and 
livid blue in colour, but soon become covered with white down. 
Sula piscatrix (L.). 
This species has not yet, so far as we know, been recorded actually from 
Celebes, but Biittikofer (Zool. Erg. Weber’s Reise 1893, III, 285 mentions the 
skeleton of a Gannet shot between Madura and Celebes as belonging to this 
species, and it is certain ultimately to be found on the coasts. The adult is 
easily distinguishable from /S. leueogaster by its white plumage (except the remiges 
and greater wing-coverts, which are dusky grey); the young is not ahvays easy 
to distinguish, but in life it has red feet, the young of S. leueogaster greenish 
yellow legs and feet. 
