Which type of environmental scientist is likely to study how different species of birds interact?

a. Hydrologist

b. Toxicologist

c. Oceanographer

d. Ecologist

The answer is letter A.

Ecologists are scientists that study how different species interact in a given environment. The fields of study of this branch of science involves, Biology, Geography and Earth Science. Ecologists are responsible to know how a particular organism behaves and interacts with its environment and vice versa.

In this case, birds are the species that are being observed. The study of birds are done by Ornithologists, this is a branch in Ecology that focuses on the study of different species of birds.