Muscicapa cyanomelana cyanomelana Temminck: Blue and White Flycatcher.—Specimen, 1: Cocoa Research Station: ♂, November 27, 1962, MCT 3335.
The specimen, netted in the cocoa, apparently provides the only record from the east coast of Borneo (see Smythies, 1957:742).
Muscicapa concreta everetti (Sharpe): White-tailed Blue Flycatcher.—Specimens, 6: 12 mi. N Kalabakan: ♂, October 15, 1962, MCT 3045; ♂, November 1, 1962, MCT 3199; ♀, November 8, 1962, MCT 3229; ♂, November 8, 1962, MCT 3230. 5.5 mi. SW Tenom: ♂, December 19, 1962, MCT 3465; ♀, December 23, 1962, MCT 3516.
This species seems to be confined to the primary forest, and was common at both localities listed. Smythies (1960:444) thought it resided primarily at elevations of 2,000 to 4,000 feet, occasionally occurring near sea level. This flycatcher seems to prefer the understory of the forest, where it was observed sitting on bare limbs and darting out after insects.
Muscicapa unicolor infuscata (Hartert): Pale Blue Flycatcher.—Specimens, 2: 12 mi. N Kalabakan: ♂ by plumage, October 31, 1962, MCT 3189; ♀, November 12, 1962, MCT 3556.
This flycatcher was seen only in primary forest, on the above dates. The birds collected appear to provide the only definitive records for North Borneo (cf. Smythies, 1960:445), although Mary Norman observed the species once at Quoin Cocoa Estate on an unspecified date (Smythies, 1963:281).
Muscicapa turcosa rupatensis Oberholser: Malaysian Blue Flycatcher.—Specimen, 1: Tiger Estate: ♀, November 25, 1962, MCT 3320.
Muscicapa caerulata caerulata (Bonaparte): Large-billed Blue Flycatcher.—Specimens, 10: Ulu Balung Cocoa Estate: ♂, July 10, 1963, ADG 185. 12 mi. N Kalabakan: ♂, October 19, 1962, MCT 3076; ♂, October 24, 1962, MCT 3144; ♂, October 26, 1962, MCT 3160; ♀, October 28, 1962, MCT 3170; ♀, November 8, 1962, MCT 3232; ♂, November 13, 1962, MCT 3266. Oil Palm Research Station: ♀, August 12, 1963, ADG 223; ♀, August 16, 1963, ADG 244; ♂, August 19, 1963, ADG 252.
This was the most common "blue" flycatcher at Kalabakan. It was recorded at Quoin Hill only by Garcia. The record by Smythies (1963:281) seems open to question as no specimen was preserved.