Sulky looking pigeon? (6)
I believe the answer is:
pouter
This might be a double definition.
'sulky looking' is the first definition.
The definition suggests a singular noun which matches the answer.
'pigeon?' is the second definition.
(pouter is a type of pigeon)
Can you help me to learn more?
(Other definitions for pouter that I've seen before include "Petulant-looking" , "Kind of pigeon" , "One having pet" .)