An annotated list of the birds found in a privately owned reserve in the subtropical zone on the eastern slope of Colombia's Central Andes is presented. The list is based on our own observations carried out in 1975-1976, and is amplified by discussion of hitherto unreported collections of birds taken nearby by M. A. Carriker, Jr., in the 1950s. Included are distributional, behavioral, and ecological notes on a number of poorly known species. Important range extensions are noted for four species: Hapalopsittaca amazonina, Anthocephala floriceps, Campylorhamphus pucheranii, and Atlapetes flaviceps.