鳥ちょう卵らん学がくMeanings1nounoology; study of bird eggsScientific field concerned with the collection and study of bird eggs, especially their size, shape, and coloration.鳥ちょう卵らん学がくは、鳥ちょう類るいの卵たまごの形けい態たいや生せい態たいを研けん究きゅうする学がく問もんです。Oology is the study of the form and ecology of bird eggs.