Potentially Iron Age bird? (6)
I believe the answer is:
pigeon
'bird?' is the definition.
(type of bird)
'potentially iron age' is the wordplay.
'potentially iron' becomes 'pig' (pig iron is a kind of iron. I am not sure about the 'potentially' bit.).
'age' becomes 'eon' (eon is a kind of age).
'pig'+'eon'='PIGEON'
Can you help me to learn more?
(Other definitions for pigeon that I've seen before include "Trafalgar Square bird?" , "Baby" , "Epigon (anag.)" , "a visitor to Trafalgar Square" , "Bird of towns and woods" .)