This author delves into ecological anthropology, drawing insights from studies of indigenous peoples in lowland South America. Their work examines subsistence practices in neotropical forests, warfare among tribal groups, and human reproductive strategies. They have explored concepts such as partible paternity and its impact on child survivorship, alongside the conditions under which tribal societies conserve their natural resources. Current research is focused on the evolutionary ecology of tribal warfare.
The first book-length study of the human ecology of the Bari, drawing on more than forty years of field research to examine relations with natural and social environments, reactions to depredations and warfare, and belief in the possibility that a child can have dual paternity.