Ecologists study animals, plants and the environment and the relationships between them all. They consider the impact changes of their habitat, numbers or climate may have on them as a whole or for a specific species in support of UK or European legislation. For construction projects they may need to carry out surveys on the habitats of endangered animals (such as bats, water voles, great crested newts, dormice, otters, badgers etc.); ecological or environmental impact assessments, carry out re