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We describe a newly developed and low-cost feeder designed for use with arboreal small mammals under any climatic condition. As part of a project on bottom-up regulation of small mammal populations in central Brazil, we present the results of 16 months of food supplementation. During the study, more than 118 kg of milled cat food were consumed, out of a total of 207 kg offered. Moreover, we registered a low rate of loss (14.05%) of feeders from falling to the ground or termite/ant colonization. The round-pot feeder described here represents a low-cost method for providing continuous food-supplementation, contraceptives, or poisoned baits to arboreal small mammals.

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