What the pigeon said in company with a duck? (3)
I believe the answer is:
coo
'what the pigeon said' is the definition.
I know that 'pigeon' relates to this answer.
'company with a duck?' is the wordplay.
'company' becomes 'co' (abbreviation).
'with' is an insertion indicator.
'a duck?' becomes 'o' (resembles zero - 'duck' in cricket).
'co' going around 'o' is 'COO'.
'in' is the link.
Can you help me to learn more?
(Other definitions for coo that I've seen before include "Surprised expression" , "Murmur amorously" , "Pigeon noise" , "Murmur of a dove" , "(Of pigeon) murmur" .)