Game bird that in Spain one hears (7)
I believe the answer is:
croquet
'game' is the definition.
(croquet is a kind of game)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for croquet that I've seen before include "Game which involves driving balls through hoops" , "Lawn sport" , "Game played with mallets (or flamingoes according to Lewis Carroll)" , "Ball-game" , "Lawn pastime" .)