There are weirdly rigid common names around birds. There is a whole thing about renaming them right now. They are essentially regulated terms that low level pedants respect. They are the same types of people who would correct you for calling Frankenstein’s monster ‘Frankenstein’.
The plant community is better. You could call a “sunflower” a “tall flower” and nobody would care. You might get a “oh, I’ve never heard that one” but never “there’s no such thing as a ‘tall flower.’” They just fall back to the scientific names when clarity is important.
IMO common names should just be useful. I will call any gull a seagull when talking to non-bird people because that is a term that is commonly understood and how effective communication works.
I absolutely agree that there should be a official name. My problem with birds is that there are 2 official names. The American Ornithological Society approves both of them (kind of). One is Latin/Greek/whatever in Genus species format - that is the one for science literature and taxonomy. The other is in English and silly in my opinion because that’s where people will use it to say nonsense like there is no such thing as a seagull.