band-tail pigeon vs bandtail

band-tail pigeon and bandtail both are nouns.

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

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

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

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

band-tail pigeon (noun)	bandtail (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