family Strigidae vs bird family

family Strigidae and bird family both are nouns.

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

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

family Strigidae: a family of nocturnal birds of the order Strigiformes
bird family: a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings

family Strigidae (noun)	bird family (noun)
a family of nocturnal birds of the order Strigiformes	a family of warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings