Ornithologist
Hydrologist
The proper name for the Jan pierewiet bird is the Bokmakierie. Its scientific name is Telophorus zeylonus.
An entomologist.
Marine biologist.
A person who studies the formations and changes of glaciers, is a glacier geologist.
Rhea
Yes, because 'fish' and 'bird' refers to a whole category of something, while a proper noun refers to a single entity(such as someone's name or the name of a city)
If you don't know a bird expert, look it up in a Field Guide.
The proper name for the bird sometimes known outside of Australia as a laughing jackass is the Laughing Kookaburra.
The proper name for the bird sometimes known overseas as a laughing jackass is the Laughing Kookaburra.
Eagle is a kind of bird not a name of bird therefore it's a common noun.
A proper noun for a bird would be the specific name of a particular bird species, such as "American Robin" or "Bald Eagle." Proper nouns are used to identify individual entities and are always capitalized. In contrast, common nouns like "bird" refer to a general category of animals and are not capitalized unless they appear at the beginning of a sentence.