redwing vs Agelaius phoeniceus

redwing and Agelaius phoeniceus both are nouns.

Word	Noun	Adjective	Verb	Adverb
redwing	Yes	No	No	No
Agelaius phoeniceus	Yes	No	No	No

As nouns, redwing and Agelaius phoeniceus are synonyms defined as:

redwing and Agelaius phoeniceus: North American blackbird with scarlet patches on the wings

Other synonyms of redwing include red-winged blackbird.

redwing (noun)	Agelaius phoeniceus (noun)
small European thrush having reddish flanks	North American blackbird with scarlet patches on the wings
North American blackbird with scarlet patches on the wings