Nation of poultry? (6)
I believe the answer is:
turkey
I believe this clue is a double definition.
'nation' is the first definition.
(Turkey is an example)
'poultry?' is the second definition.
(I know that turkey is a type of poultry)
'of' is the link.
(Other definitions for turkey that I've seen before include "would-be EC member" , "A failed play or a seasonal bird" , "Christmas dinner?" , "failure in America" , "hill-dwelling MC in 3 9 [THE OWL AND THE PUSSY-CAT]" .)