red jungle fowl vs jungle fowl

red jungle fowl and jungle fowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
red jungle fowl	Yes	No	No	No
jungle fowl	Yes	No	No	No

As nouns, jungle fowl is a hypernym of red jungle fowl; that is, jungle fowl is a word with a broader meaning than red jungle fowl:

red jungle fowl: a jungle fowl of southeastern Asia that is considered ancestral to the domestic fowl
jungle fowl: small Asiatic wild bird; believed to be ancestral to domestic fowl

Other hypernyms of red jungle fowl include gallina.

red jungle fowl (noun)	jungle fowl (noun)
a jungle fowl of southeastern Asia that is considered ancestral to the domestic fowl	small Asiatic wild bird; believed to be ancestral to domestic fowl