We have a new paper out in Journal of Animal Ecology that uses species-specific functional traits related to morphology, diet, and environmental niche breadth to predict abundance changes of cloud forest birds along an agricultural land use gradient in Peru. In addition, we show that the ecological niche space occupied by bird communities in countryside landscapes is extremely dynamic, with different functional trait combinations contracting or expanding as communities change in their species composition. Finally, we find that montane species occupying wide elevational limits are less sensitive to disturbance, meaning that the species least likely to disappear in fragmented montane landscapes are generalists adapted to a wide array of floristics and climatic conditions.