Ornithologist.
A scientist who studies mollusks is called a teuthologist.
a marine biologist
An Ecologist. Hope I helped :)
A scientist that studies animal life is a Zoologist.
An entomologist is a scientist that studies insects and 'bugs.' A chiropterologist is a scientist who studies bats. An ornithologist studies birds. It would depend on what small, winged creature was being studied.
A scientist that studies fungi is called a mycologist.
A biotechnology scientist.
An Oceanographer. Marine Biologist, that sort of thing.
A scientist that studies bears would be called an ursinologist.
a scientist who studys cells are called what
virologist
A meteorologist.
An aviologist.
biologist
astronomer
Mineralogists
A vulcanologist