blue jay vs jaybird

blue jay and jaybird both are nouns.

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

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

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

Other synonyms of blue jay include Cyanocitta cristata.

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