The most common and most likely answer to this crossword clue is the 3 letter word COO
C
O
O
More clues leading to the result COO
- That's surprising bird sound
- Bill's companion loves following clubs
- Sound made by dove and another bird mostly
- Imitate a dove? Goodness me
- Chef having bottom pinched: that’s a surprise
- Make meal shortly for Bill’s companion?
- My love wants company in the van
- Murmured sound is not entirely unenthusiastic
- Officer Brown’s heart murmur
- Speak softly? Successful move in hearing
Buddy explains!

The straight part
We know that "Sound made by dove" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sound made by dove = coo.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does COO mean?
COO noun- The murmuring sound made by a dove or pigeon.
- (by extension) An expression of pleasure made by a person.
- To make a soft murmuring sound, as a pigeon.
- To speak in an admiring fashion, to be enthusiastic about.
- Cool.
- An expression of approval, fright, surprise, etc.