334 
Birds of Celebes; Oypselidae. 
-t 106. COLLOCALIA ESCULENTA (L.). 
White-bellied Swiftlet. 
a. Hirundo esculenta (I) Linn., 8. N. 1766, XII, 343. 
Collocalia esculenta (1) Wald., Tr. Z. 8. 1872, VTH, 46; (2) Meyer, Ibis 1879, 65; (3) 
Salvad., Orn. Pap. 1880, I, 540; (4) Guillem., P. Z. 8. 1885, 549; (5) Hickson, 
Xat. in X. Celebes 1889, 49, 91; (6) 8alvad., Orn. Pap. Agg. 1889, 63; (7) Hartert’ 
Cat. B. XVI, 1892, 509; (8) Tristr., Ibis 1892, 296; (9) Bilttik, Xotes Leyden Mus. 
1892, 194; (10) M. & Wg., Abb. Mus. Dresden 1895, Xr. 8, p. 8; (11) iid., ib. 1896, 
Xr. 2, p. 14; (12) 8alvad., Ann. Mus. Civ. Gen. 1896, XXXYI, 73; (13) Hartert, 
Xov. Zool. 1896, 158, 175, 243, 570; (14) id., Tierreicb 1897, I, 70. 
b. Collocalia hypoleuca (1) Gray, P. Z. 8. 1858, 170, 189; (II) id.. Cruise “Curagoa”, B. 
1873, 356, pi. n, fig. 1; (3) Eosenb., Malay. Ar chip. 1878, 271; (4) 8alvad., Atti 
Ac. 8c. Tor. 1880, 346. 
c. Collocalia viridinitens (1) Gray. Ann. and Mag. X. H. 1866, XYH, 120. 
d. Collocalia sp. (1) Buttik., Xotes Leyd. Mus. 1891, 210. 
“Tetekek”, Peling, “Tepede”, Banggai (Xat. Coll.). 
For further synonymy and references see 8alvad. 5, Hartert 7, 
Adult. Above glossy dark bluish green, tail and outer vrebs of quills bluer, inner webs 
of latter dusky, rectrices, except the two middle ones, with a large patch of white 
on basal half of the inner webs ; bases of loral plumes white; chin and sides of 
face dark mouse-grey; throat, hreast and sides mouse-grey with white margins, 
these margins increasing in width on the lower parts, so that the abdomen is pure 
white; under tail-coverts — the longest uniform hlue-hlack, the shorter ones hlackish 
green, broadly bordered with white, the shortest uniform white; under wing-coverts 
blackish, fringed with white (Minahassa — Xr. 821). Bill and feet dark brown 
(Platen, Mus. Xehrkorn). 
Sexes. Alike. 
Young. Xot so glossy above, but otherwise similar to the adult (Hartert 7). 
Measurements. 
Wing 
Tail 
Bill from 
gape 
Tarsus 
a. (Xr. 821) ad. Minahassa (Eaber) 
94 
44 
8.5 
— 
h. (Xr. 820) ad. Minahassa (Eaber) 
85 
35 
8 
— 
c. (8arasin Coll.) ad. Tomohon, 12. X. 94 ... . 
97 
40 
— 
7.5 
A series of 17 from Pehng and Banggai were very small: wing 69 — 90 mm, 
average 80. 
Eggs. Amhoina. Elliptic and white, like the eggs of all Cypselidae and Trochilidae. 8ize 
17.5x11 mm. They are similar to a series of Humming-birds eggs, the shells of 
which, however, are somewhat more dehcate (Xehrkorn M8.). Always 2 in a clutch 
(Hartert). 
Nest. A nest in the 8arasin Collection “is built entirely of hchens and was stuck fast on 
a rock with saliva. In form it resembles perfectly the ordinary edible nests. Of 
these we saw many, as we were returning along the coast from Mahbagu back to 
Kema. As is known the harvesting of these nests is a monopoly of the king of 
Bolang Mongondo’* (P. & E. 8arasin in lit.). By Mr. Everett “on Xovemher 2”'^ 
a colony was found breeding in a cave near Indrulaman. The nests were not edible, 
but consisted of moss, rootlets, and little twigs, agglutinated and fixed to the walls 
of the cave with saliva" (Hartert 13). 
