Upper Temperate Forest (IMAGE) Princeton University Caption The researchers found that competition set the boundaries for a mere 12 percent of Himalayan bird species, while temperature and habitat dictate where 48 and 40 percent of species live, respectively. Pictured above are a chestnut-headed tesia (Oligura castaneocoronata) (left), a species limited by temperature, and a collared grosbeak (Mycerobas affinis) (right), a species limited by habitat. Both species live in upper temperate forests (center). Credit Photos by Prashant Negi and Paul Elsen, Department of Ecology and Evolutionary Biology Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.