Although this species was observed by me at the Cocoa Research Station, I was unable to obtain any specimens. It was also seen commonly at Semporna, Siamil Island, Kalabakan, Brantian Estate, and at Tuaran, always associated with cultivated areas. The birds obviously were breeding at Tenom in December, and several young were taken. In some, the molt of the wings, body, and tail had begun. _=Pycnonotus plumosus hutzi=_ Stresemann: Large Olive Bulbul.--_Specimens_, 8: Tenom: [Female], December 31, 1962, MCT 3551; [Male] testis 6 x 5 mm., January 1, 1963, MCT 3553; [Male] testis small, January 1, 1963, MCT 3554; [Male] testis 6 x 4 mm., January 4, 1963, MCT 3577; [Male] testis 5 x 4 mm., January 4, 1963, MCT 3578. Mt. Rumas: [Male], March 6, 1963, ADG 16; [Female], March 6, 1963, ADG 17; sex?, March 6, 1963, ADG 15. The specimens were netted in scrub-grassland at Tenom. The size of the testes of the Tenom specimens indicated that the birds were breeding. _=Pycnonotus brunneus brunneus=_ Blyth: Red-eyed Brown Bulbul.--_Specimens_, 17: Cocoa Research Station: [Male] imm., 32.6 gm., July 22, 1962, MCT 2638; [Male] testis minute, 37.3 gm., August 2, 1962, MCT 2709; [Male] testis minute, 36.0 gm., August 3, 1962, MCT 2720; [Female] ovary granular, September 4, 1962, MCT 2867; [Male] testis 6 x 4 mm., September 4, 1962, MCT 2868; [Female] egg in oviduct, largest ovum 9 mm., 1 collapsed follicle, 30.0 gm., September 10, 1962, MCT 2894; [Male] testis small, September 25, 1962, MCT 2953; [Female], September 25, 1962, MCT 2954; [Male] testis small, November 27, 1962, MCT 3346; [Male] testis 4 x 2 mm., November 29, 1962, MCT 3380; [Male] testis small, November 29, 1962 MCT 3393; [Male] testis small, December 1, 1962, MCT 3402; [Male] testis small, December 1, 1962, MCT 3403; [Male] testis small, December 1, 1962, MCT 3404; [Female] ovary minute, December 1, 1962, MCT 3416; [Male] testis small, November 30, 1962, MCT 3438. Oil Palm Research Station: [Female], August 27, 1963, ADG 260. This most common of the "brown" bulbuls at the Cocoa Research Station frequented shade trees (_Trema orientalis_). One bird fed on small red peppers, Capsicum sp. Some of the September-taken specimens were in breeding condition. _=Pycnonotus simplex perplexus=_ Chasen and Kloss: White-eyed Brown Bulbul.--_Specimens_, 3: 5.5 mi. SW Tenom: [Female] ovary granular, December 19, 1962, MCT 3469; [Male] testis 4 x 3 mm., December 20, 1962, MCT 3478; [Female] ovary granular, December 22, 1962, MCT 3499. This bird was taken only in the moss forest at 4,000 feet elevation near Tenom. Smythies (1960:382) considered the species to be characteristic of the lowlands. Specimens were taken by Harrison in the Kelabit Uplands (Smythies, 1957:704) at 4,200 feet.