family Ibidiidae vs bird family

family Ibidiidae and bird family both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Ibidiidae	Yes	No	No	No
bird family	Yes	No	No	No

As nouns, bird family is a hypernym of family Ibidiidae; that is, bird family is a word with a broader meaning than family Ibidiidae:

family Ibidiidae: a family comprising ibises and spoonbills (Threskiornithidae, Ibidiidae)
bird family: a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

family Ibidiidae (noun)	bird family (noun)
a family comprising ibises and spoonbills (Threskiornithidae, Ibidiidae)	a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings