Factfinder

[creamegg]

20d a person who engages in discussion
m?u?e?

All letters are correct.

[Sam1960]

mooter ??

[creamegg]

but the 'u' is correct, clue is a small breed of domestic fowl, and I put cogburn which gives a 'u' instead of an 'o'

If it was mooter then letters would be c?g?o?n

[Mamyalynne]

All it can be, hard when OP says all are correct.

https://www.lexico.com/en/definition/mooter

[cashier]

Is the domestic fowl not leghorn?

[scorpiojo]

Leghorn, not Cogburn?

[creamegg]

can't be leghorn as the c is defo correct. It comes from terracotta, a brownish red colour

[scorpiojo]

Perhaps a spelling error for terracotta? Rooster Cogburn was a film.

[cashier]

Vermillion for the colour?

[creamegg]

terracotta is what I have for a brownish red colour, and it fits with everything else.

Is there another way to spell it?

[creamegg]

vermillion would mean that every other answer is wrong, which can't be.

[creamegg]

mooter is an alternative spelling for mouter it says on a scots webpage but it says it means to fret?

[creamegg]

but mouter would fit?! I'm so confused.

[cashier]

The factfinder crossword clue site does give cogburn and terracotta as the answers to the related questions but when I typed in the clue you are asking for, it gave no answer. Sorry can't help any more.

[creamegg]

there's a factfinder crossword clue site? May I ask what the link is? I am thinking it may just be 'mouter'

[cashier]

Wordplays.com

Can's do links sorry.