_Fluviatile waters._--There are numerous small streams in the Quoin Hill area, the largest being the Balung River and Apas River. Little work was done along these streams and only the thrushes of the genus _Enicurus_ and some kingfishers seemed to be confined to them. _Cocoa plantations._--Artificial plantings of cocoa, _Theobroma cacao_, formed a major habitat type at Quoin Hill, and provided a major source of food for birds. Cocoa planters have found it necessary to provide shade with trees of some other species. In some instances trees from the original primary forest were left standing to provide this shade, but more often exotic trees were planted. Most of the shade trees were of no use to birds save for providing resting places. _Trema orientalis_ was the most important in providing food for birds. Its fruit was used more by the frugivorous species of birds than that of any other tree in the cocoa plantings. Tree Cassava, an exotic, was constantly attended by the nectariniids, or honey creepers. Although the cocoa plantings did not provide much plant material for bird food, they did apparently nourish a horde of insects, which the birds fed upon. A Drongo-cuckoo, _Surniculus lugubris_, had 50 caterpillars in its stomach. Healthy cocoa trees were sparsely inhabited by birds but areas that were obviously infested with insects literally swarmed with birds. Dead shade trees in the cocoa plantings also provided food for woodpeckers, with four species being found utilizing these dead trees. _Abaca._--The last of the habitat types that I recognized at Quoin Hill was a small grove of Abaca, _Musa textilis_, and wild bananas, _Musa_ sp. This habitat type was frequented by spiderhunters (_Arachnothera_ sp.) of the family Nectariniidae. KALABAKAN.--We worked at three localities in this area: 12 miles north of Kalabakan, Brantian Estate, and Kalabakan. _Primary forest._--We were fortunate in being able to work on the very edge of the primary forest 12 miles north of Kalabakan. The composition of the primary forest was much like that at Quoin Hill and will not be discussed further. About a month after we arrived at our forest camp, logging crews moved in and cut the commercial timber near our area. The only immediately noticeable difference in the makeup of the avifauna after destruction of the forest canopy was the appearance of the drongo _Dicrurus aeneus_. This drongo was seen in areas where the trees had been cut, sitting on limbs and darting out after insects. _Secondary forest._--The area around Kalabakan proper was in secondary forest, which was almost impossible to penetrate. At Kalabakan, _Cymbirhynchus macrorhynchus_, _Cecropsia striolata_, and _Macronous ptilosus_ were taken and I did not see them elsewhere. Kalabakan is situated on the Kalabakan River at the upper tidal limit. The Nipa-Mangrove association, not investigated, lies immediately below Kalabakan.