Hemiprocne longipennis longipennis (Rafinesque): Crested Tree Swift.—Specimens, 2: Cocoa Research Station: ♂ testis 4 × 3 mm., September 4, 1962, MCT 2866; sex?, 42.8 gm., September 8, 1962, MCT 2888.
These swifts also were common at the Cocoa Research Station. Unlike H. comata, these birds flew high and sat far up in trees while resting. I never observed them in the primary forest.
The two specimens were more greenish-blue dorsally than typical H. l. longipennis. Specimens from Java were paler gray ventrally and their tertials were more nearly white. Too few specimens were available to permit determination of the constancy of the mentioned variation and the two from the station are referred to the nominate subspecies until more material becomes available.
Harpactes diardi diardi (Temminck): Diard's Trogon.—Specimens, 8: Cocoa Research Station: ♀, 95.9 gm., July 2, 1962, MCT 2579; 3 alcoholic naked young, July 3, 1962, presumed young of 2579, MCT 2581-83; ♀, 95.0 gm., August 20, 1962, MCT 2782; ♂ testis 6 × 3 mm., September 5, 1962, MCT 2870; ♂, September 5, 1962, MCT 2871; ♂, December 1, 1962, MCT 3409.
This was the most numerous of the trogons at the Cocoa Research Station. One female was taken in a live trap set for rats in the cocoa. The next day a laborer found a young, presumably of that female, in a nest in the same area. On August 20, a flock of 5 to 10 birds was seen moving together in a loose group through the jungle. This species appeared to be a bird of the primary forest, but occasionally was found in the cocoa.
Harpactes kasumba impavidus (Chasen and Kloss): Red-naped Trogon.—Specimens, 2: Cocoa Research Station: ♂, 72.1 gm., August 5, 1962, MCT 3730 (discarded); ♀, September 7, 1962, MCT 2883.
This species of the deep forest was not seen in any other habitat.
Harpactes duvauceli (Temminck): Scarlet-rumped Trogon.—Specimens, 7: Cocoa Research Station: ♀, 30.9 gm., July 24, 1962, MCT 2648; ♂?, December 1, 1962, MCT 3407; ♂, December 1, 1962, MCT 3408. Ulu Balung: ♀, July 18, 1963, ADG 209; ♂, July 18, 1963, ADG 208. Kinabatangan Agricultural Station: ♀, October 13, 1963, ADG 305. 12 mi. N Kalabakan: ♀, October 10, 1962, MCT 2996.
This trogon of the primary forest was second in abundance only to H. diardi.
Halcyon concreta (Temminck): Chestnut-collared Kingfisher.—Specimens, 2: 12 mi. N Kalabakan: ♂, November 8, 1962, MCT 3222; ♀, November 8, 1962, MCT 3223.
This kingfisher was netted near a small stream in the deep primary forest. Another individual was obtained in moss forest at an elevation of 4,000 feet at Tenom, but was discarded.