band-tailed pigeon vs band-tail pigeon

band-tailed pigeon and band-tail pigeon both are nouns.

Word	Noun	Adjective	Verb	Adverb
band-tailed pigeon	Yes	No	No	No
band-tail pigeon	Yes	No	No	No

As nouns, band-tailed pigeon and band-tail pigeon are synonyms defined as:

band-tailed pigeon and band-tail pigeon: wild pigeon of western North America; often mistaken for the now extinct passenger pigeon

Other synonyms of band-tailed pigeon include bandtail, Columba fasciata.

band-tailed pigeon (noun)	band-tail pigeon (noun)
wild pigeon of western North America; often mistaken for the now extinct passenger pigeon	wild pigeon of western North America; often mistaken for the now extinct passenger pigeon