], September 4,
1962, MCT 2869; [Female] largest ova 3 mm., oviduct enlarged, 12.0 gm.,
September 12, 1962, MCT 2905; [Female], November 27, 1962, MCT 3350;
[Male], November 27, 1962, MCT 3351; [Male], November 27, 1962, MCT
3355.

The Rufous-throated Sunbirds were the most common sunbirds at the
Cocoa Research Station. They seemed to prefer foraging about
flowers of the Tree Cassava. The stomachs of those examined
contained insects. The absence of _A. malacensis_ suggests that
these two species are mutually exclusive.

_=Anthreptes singalensis borneana=_ (Kloss): Ruby-cheeked
Sunbird.--_Specimens_, 3: Cocoa Research Station: [Male], 8.0 gm.,
August 23, 1962, MCT 2801; [Male], November 29, 1962, MCT 3385;
[Female], 8.4 gm., August 10, 1962, MCT 2752.

This species seemed to prefer secondary forest or cocoa as a
habitat and was an uncommon bird at Quoin Hill.

_=Nectarinia sperata=_ (Linnaeus): Van Hasselt's Sunbird.--Fred Dunn saw
a male in secondary forest near the Cocoa Research Station.

_=Nectarinia jugularis=_ (Linnaeus): Yellow-breasted Sunbird.--This
sunbird was abundant in the coconut palms at Siamil Island. The species
was observed also at exotic flowering plants in Tawau.

_=Nectarinia hypogrammica hypogrammica=_ S. Mueller: Purple-naped
Sunbird.--_Specimens_, 10: Cocoa Research Station: [Female], November
27, 1962, MCT 3334: [Male], July 7, 1963, ADG 167. 12 mi. N Kalabakan:
[Male] testis 3 x 5 mm., October 14, 1962, MCT 3035; [Male], October 15,
1962, MCT 3047; [Male], October 23, 1962, MCT 3133; [Male], October 24,
1962, MCT 3145; [Male], November 2, 1962, MCT 3203; [Female], November
15, 1962, MCT 3287. Oil Palm Research Station: [Female], August 16,
1963, ADG 247; [Male], August 27, 1963, ADG 262.

This common species of secondary forest at Quoin Hill seems to
prefer spiders and various insects for food. I saw one bird
removing dead leaves from a tree and picking out the spiders that
had taken over the curled leaves as shelters. I also saw birds of
this species hover before spiderwebs and remove the spiders.

A specimen taken on November 15, 1962, was in heavy molt.

_=Aethopyga mystacalis=_ (Temminck): Scarlet Sunbird.--_Specimen_, 1:
Cocoa Research Station: [Male], 6.0 gm., September 12, 1962, MCT 2903.

This specimen was molting from a drab to an adult type male
plumage. I saw this species only one other time at Quoin