Hypsipetes charlottae perplexus (Riley): Crested Olive Bulbul.—Specimens, 5: Cocoa Research Station: ♂ testis 5 × 3 mm., August 27, 1962, MCT 2818; ♂ testis 5 × 4 mm., September 25, 1962, MCT 2951; ♀, September 25, 1962, MCT 2952; ♂, November 27, 1962, MCT 3333; ♀ imm., 32.6 gm., July 22, 1962, MCT 2638.
This species was occasionally observed in the cocoa, where it fed on berries of Trema orientalis. The size of the testes in males taken in August suggests that the species had been breeding earlier.
Hypsipetes flavalus connectens (Sharpe): Ashy Bulbul.—Specimens, 7: 5.5 mi. SW Tenom: ♀, December 23, 1962, MCT 3508; ♀ largest ova 1 mm., December 17, 1962, MCT 3447; ♂, December 17, 1962, MCT 3448; ♂ testis 4 × 3 mm., December 19, 1962, MCT 3466; ♂, December 19, 1962, MCT 3467; ♂ testis 6 × 6 mm., December 20, 1962, MCT 3476; ♂ testis 5 × 4 mm., December 20, 1962, MCT 3477.
This was a common and conspicuous bird in the moss forest. Males called and sang there. The call note sounds like the mew of a cat. The Ashy Bulbul could easily be "squeaked in," at which time it approached silently. When observed in the forest it was noisy and gregarious.
Aegithina viridissima viridissima (Bonaparte): Green Iora.—Specimens, 7: Cocoa Research Station: ♀ largest ovum 1 mm., 13.5 gm., August 10, 1962, MCT 2755; ♂ testis 8 × 5 mm., 14.8 gm., August 10, 1962, MCT 2756; sex?, 13.2 gm., August 25, 1962, MCT 2805; ♂, 12.5 gm., September 10, 1962, MCT 2895; ♀ 13.0 gm., September 14, 1962, MCT 2921; ♀, November 27, 1962, MCT 3345. 5.5 mi. SW Tenom: ♂, December 20, 1962, MCT 3479.
In the cocoa this abundant bird usually occurred in flocks of five to 10 and fed 10 to 15 feet up in shade trees. On December 17, I saw singing males in the moss forest at 4,000 feet, 5.5 miles southwest of Tenom. This is considered a lowland species by Smythies (1957:698).
Aegithina tiphia aequanimis Bangs: Common Iora.—Specimens, 2: Tenom: ♂, January 5, 1963, MCT 3581; ♂, January 5, 1963, MCT 3582.
Two were netted in secondary forest near Tenom.
Chloropsis cyanopogon cyanopogon (Temminck): Lesser Green Leafbird.—Specimens, 8: Cocoa Research Station: ♀, 19.8 gm., July 21, 1962, MCT 2630; ♂ testis 2 × 1 mm., 25.3 gm., July 21, 1962, MCT 2631; ♂ testis 8 × 5 mm., August 27, 1962, MCT 2819; ♀, 22.2 gm., September 14, 1962, MCT 2923; ♀, November 27, 1962, MCT 3342; ♀, November 27, 1962, MCT 3352; ♀, April 28, 1963, ADG 77; ♀, May 28, 1963, ADG 116.
It was seen regularly in the cocoa at the research station and was the most common leafbird.