Notornis mantelli vs notornis

Notornis mantelli and notornis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Notornis mantelli	Yes	No	No	No
notornis	Yes	No	No	No

As nouns, Notornis mantelli and notornis are synonyms defined as:

Notornis mantelli and notornis: flightless New Zealand birds similar to gallinules

Other synonyms of Notornis mantelli include takahe.

Notornis mantelli (noun)	notornis (noun)
flightless New Zealand birds similar to gallinules	flightless New Zealand birds similar to gallinules