jaybird vs blue jay

jaybird and blue jay both are nouns.

Word	Noun	Adjective	Verb	Adverb
jaybird	Yes	No	No	No
blue jay	Yes	No	No	No

As nouns, jaybird and blue jay are synonyms defined as:

jaybird and blue jay: common jay of eastern North America; bright blue with grey breast

Other synonyms of jaybird include Cyanocitta cristata.

jaybird (noun)	blue jay (noun)
common jay of eastern North America; bright blue with grey breast	common jay of eastern North America; bright blue with grey breast