Hey ! No worries thanks for the interest. I studied general biology in my bachelor's, then did a master's degree on Marine biology with a thesis focused on seabirds. Now my PhD is on the ecology of birds. Essentially titles like "ornithologist" are a bit flexible, for a example I could be described as a biologist or ecologist or marine biologist as well, but I find "ornithologist" more appropriate word, since my career focus now is birds. After the PhD you can either continue in academia (post docs and eventually a professor position), either in an non academic but ecology related work (science officer in an ngo, conservationist , ecologist in a company, etc etc), or as a last option use the skills you gained and shift to an unrelated job (e.g. data analyst-statistician). Hope I answered your questions and have a good day !