some we name and some we don't. some get a collective name. we call all the Brown Leghorns, 'Brown Leghorns'.
we choose names to go with the area the birds originated from, how we got the bird, a physical characteristic or a personality trait.
ie:
Sister Mary Agnes is a sassy Catholic school girl type
Della-What and Della-Who are Delawares
Dutch is a Delaware. the Dutch people settled Delaware
Belgie...because we are Belgian, and she runs with her head down like a Belgian fighter
Dolly is the type who looks like a Dolly Parton type
Matilda is an Australorp, named for "The Waltzing Matilda"
Rex named because he thinks he's the king. (Rex is latin for king)
Huck-a-Buck is named for a term my FIL uses for tightening something down. 'You have to put the huckabuck on it'. and that's what he does for the flock.