The specimens were taken on the coral sand beach surrounding Karindingen Island. At least 10 were seen feeding on the beach and on a reef. One (MCT 3308) had testes of a size suggesting that it was in breeding condition. _=Casmerodius alba modestus=_ (Gray): Common Egret.--_Specimen_, 1. Karindingen Island: [Female], November 24, 1962, MCT 3310. This species was seen on three dates: August 17 at Karindingen Island, where 30 were observed feeding along the mangroves bordering the island; on November 24, on the same island, where a specimen was taken from a flock of 30 birds that had been feeding on the coral sand and reef; and on November 30 when a single bird landed at the small reservoir at the Cocoa Research Station and began to feed in the shallow water. Only four specimens appear to have been recorded earlier (Smythies, 1957:561), although Smythies (1963:270) lists additional sight records. _=Egretta garzetta=_ (Linnaeus): Little Egret.--On November 24 at Karindingen Island, I observed several mixing freely with individuals of _E. sacra_ on the coral sand beaches and reefs. _=Egretta eulophotes=_ (Swinhoe): Chinese Egret.--_Specimen_, 1: Ka-Karis, Kinabatangan River, 200 feet: [Male], October 20, 1963, ADG 326. This is the only record known to me of this species from North Borneo. Smythies (1960:126) lists 11 specimens from other parts of Borneo. _=Egretta sacra=_ (Gmelin): Reef Egret.--The species was observed at Karindingen Island on August 17 and November 24, 1962, and was the most common egret on the island. One compact flock of 50 was seen at high tide. No white-phased birds were in the flock. _=Bubulcus ibis coromandus=_ (Boddaert): Cattle Egret.--_Specimen_, 1: Tongod: [Female], October 21, 1963, ADG 328. Individuals were observed daily at Tuaran with cattle at the Agricultural Research Centre. I saw them on December 9 when I arrived at Tuaran and again on January 13, when I departed. _=Ardeola bacchus=_ (Bonaparte): Chinese Pond Heron.--_Specimen_, 1: 12 mi. N Kalabakan: [Female], October 26, 1962, MCT 3151. The specimen was brought to our camp by a local boy who obtained it on a stream that ran through his kampong (village) near our sulap (hut). The stream was a small one that ran out of the primary forest, through the village, and back into secondary forest. _=Butorides striatus=_ (Linnaeus): Little Green Heron.--_Specimens_, 2: Telipok: [Female], March 10, 1963, TM 67; Sex?, December 13, 1962, TM 6. This heron was seen at Karindingen Island on August 17, 1962, in a small swamp near the Tawau airport on September 16, and on the reef at Siamil Island on September 18. The specimens collected at Telipok were not identified to subspecies. _=Ixobrychus cinnamomeus cinnamomeus=_ (Gmelin): Chestnut Bittern.--_Specimen_, 1: Tuaran: Sex?, December 24, 1963, SCFC 32.