Florida gallinule vs gallinule

Florida gallinule and gallinule both are nouns.

Word	Noun	Adjective	Verb	Adverb
Florida gallinule	Yes	No	No	No
gallinule	Yes	No	No	No

As nouns, gallinule is a hypernym of Florida gallinule; that is, gallinule is a word with a broader meaning than Florida gallinule:

Florida gallinule: North American dark bluish-grey gallinule
gallinule: any of various small aquatic birds of the genus Gallinula distinguished from rails by a frontal shield and a resemblance to domestic hens

Other hypernyms of Florida gallinule include marsh hen, swamphen, water hen.

Florida gallinule (noun)	gallinule (noun)
North American dark bluish-grey gallinule	any of various small aquatic birds of the genus Gallinula distinguished from rails by a frontal shield and a resemblance to domestic hens