Crossword Clue:

ORNITHOLOGIST one who studies birds

AnswerCrossword Clue
CPAOne who studies books
MYRMECOLOGISTOne who studies ants
OCULISTOne who studies irises
PALEONTOLOGISTOne who studies fossils
MICROBIOLOGISTOne who studies minute organisms
ROENTGENOLOGISTOne who studies X-rays
YOGIOne who studies asanas and pranayama