Relationship between livelihoods and the immediate habitat are very significant for the tribal populations in India and more specifically with regards to simple societies like the particularly vulnerable tribal groups (PVTG). The resourcefulness and dynamics of the ecosystem usually of the forest, in many cases have a very direct impact on the sustainability of livelihood of the tribe in question. This may be attributed to the degrading ecosystem and continuous loss of biodiversity, which may in turn is referred to both internal and external factors. Compared to the internal, external factors are potentially detrimental to the environment equilibrium as the non-tribal populations exploit the forest recourses indiscriminately for various purposes using advanced technology, disrupting the biodiversity. The forest biodiversity and livelihood practices are very directly related as tribals rely on it not only for food, but also for their shelter, medicine, and religious and emotional leanings. With these drastic changes taking place at ecological level the owes of securing livelihoods have increased, making the Chenchu to initiate new practices of food procurement, some of them being designed by the agents of developmental interventions. A keen observation and analysis of these developments gives the insight that the Chenchu are moving from self-sufficient habitat based means to new trends that are culturally alien aimed at weaning them away from the local recourses rapidly increasing interdependency on the outer world.