is a specific kind of: biologist, life scientist.

is a broader term that covers: bug-hunter, bugologist, entomologist | ethologist | herpetologist | ichthyologist | malacologist | mammalogist | bird watcher, ornithologist | protozoologist.

instances of which are: Frisch, Karl von Frisch | Goodall, Jane Goodall | Alfred Charles Kinsey, Kinsey | Konrad Lorenz, Konrad Zacharias Lorenz, Lorenz | Nikolaas Tinbergen, Tinbergen.

derivation: zoological science, zoology.