The Ku Klux Klan isn’t a group of pigeons and chickens, but there are “Coo Clucks Clan” jokes.
     
“Coos, Clucks Clan Assembles At Provincial Poultry Show” wat a headline in the Calgary (Alberta) Herald on December 5, 1967. “Agriculture Roundup: ‘Coo Clucks Clan’ in for new features” was a headline in the Calgary (Alberta) Herald on December 9, 1971. “Or, for that matter, the strange farmyard alliance between pigeons and chickens that happened recently… the Coo Clucks Clan” was posted on the newsgroup alt.fan.pratchett on April 11, 1994.
     
”@Pan_duh: Racist pigeons and chickens are part of the Coo Clucks Clan” was posted on Twitter  by Jon Pigeon on February 18, 2012. “What do you a call and racially motivated groups of pigeons and chickens? The Coo Clucks Clan” was posted on Twitter by Michelle Bilson on December 29, 2012. “What do you call a group of Pigeons and Chickens? A Coo Clucks Clan” was posted on Reddit—Jokes on July 17, 2015. “What do you call a group of racist pigeons and chickens? The Coo Clucks Clan” was posted on Reddit—Dadjokes on April 29, 2013.
   
   
Wikipedia: Ku Klux Klan
The Ku Klux Klan (/ˌkuː klʌks ˈklæn, ˌkjuː-/), commonly shortened to the KKK or the Klan in recent decades, is an American white supremacist, right-wing terrorist, and hate group whose primary targets are African Americans, Jews, Latinos, Asian Americans, Native Americans, and Catholics, as well as immigrants, leftists, homosexuals, Muslims, atheists, and abortion providers.
       
Newspapers.com
5 December 1967, Calgary (Alberta) Herald, pg. 32, col. 1:
Coos, Clucks Clan Assembles
At Provincial Poultry Show
By PETER VOGAN
 
Newspapers.com
9 December 1971, Calgary (Alberta) Herald, pg. 36, col. 5:
Agriculture Roundup
‘Coo Clucks Clan’
in for new features
By BOB GILMOUR
   
Google Groups: alt.fan.pratchett 
Next book…
Mark Cooper
Apr 11, 1994, 7:17:10 PM
.(JavaScript must be enabled to view this email address) (Rich ‘mcmxciibo’ Holmes) writes:
: Not to be confused with those bozos who tried to depose Gorbachev in
: 1991 in one of the shortest-lived and most comically inept government
: takeovers ever staged… they of course were the coup klutz clan.
 
Or, for that matter, the strange farmyard alliance between pigeons and chickens that happened recently… the Coo Clucks Clan.
   
Twitter
Mephistopheles
@Rockyjay
RT @minermikeminer If we don’t keep pigeons and chickens separated, they’ll form the Coo Clucks Clan.
10:36 AM · Nov 12, 2011
   
Twitter
Dan Blood
@Dan_Blood
@alithebarman The coo clucks clan is a club where pigeons and chickens unite around a common racism.
3:25 PM · Dec 29, 2011
   
Twitter
Jon Pigeon
@PigeonJon
“@sarah_e_hunt_73: “@Pan_duh: Racist pigeons and chickens are part of the Coo Clucks Clan.”
@PigeonJon” @nazihunteralan
7:11 AM · Feb 18, 2012
   
Twitter
Draughty
@mattwellsted74
I’m writing a book about a group of racist pigeons and chickens.
I’m calling it ‘The Coo Clucks Clan’.
There’s no story yet.
4:07 AM · Apr 7, 2012
   
Twitter
Michelle Bilson
@shellbuttonit
@bbc6music #madeupjokes
What do you a call and racially motivated groups of pigeons and chickens?
The Coo Clucks Clan
7:16 AM · Dec 29, 2012
   
Twitter
GRUNK
@GRUNKGRUNT
Still waiting on racist pigeons and chickens forming the Coo Clucks Clan
6:31 AM · Jan 14, 2013
   
Twitter
Sofa King Cool ✇
@nerdcula
A merger between two bird species, i.e. pigeons and chickens, that oppressed other birds. Call it the Coo Clucks Clan.
10:06 AM · Mar 9, 2013
     
Twitter
Ben Volchok
@zomgmouse
Some white supremacist pigeons and chickens formed the Coo Clucks Clan.
1:45 AM · May 23, 2013
 
Twitter
Steve King
@sck501
Mississippi inspired joke: What do you call a gathering of pigeons and chickens? - A coo clucks clan. #joke #humor #Jokeoftheday
9:48 AM · Apr 1, 2014
   
Twitter
Great Replacement stan account
@UpsilonMale
In America, racist pigeons and chickens join the Coo Clucks Clan.
5:06 PM · Apr 10, 2014
 
Reddit—Jokes
Posted by u/unrealmemes July 17, 2015
What do you call a group of Pigeons and Chickens?
A Coo Clucks Clan
           
Twitter
scott Ⓐ//Ⓔ
@ScottSterner4
Coo = pigeon noise
Clucks = chicken noise
The Coo Clucks Clan is secretly a bird watching group!
11:05 AM · Jan 1, 2017
 
Reddit—3amjokes
Posted by u/porichoygupto May 30, 2018
A racist pigeon and a racist chicken decided to raise a family.
And that is how the coo clucks clan got started.
   
Twitter
Mr.E Roch
@randomrochford
A pigeon and a chicken start a family.
It was a coo clucks clan
#dadjoke
7:47 AM · Sep 16, 2020
 
Reddit—Dadjokes
Posted by u/fairywithcancer April 11, 2022
Where can you find racist pigeons and chickens?
The coo clucks clan
   
Twitter
🦄MrNarwhal🦄
@Mrnarwhal93
If pigeons and chickens made a tribe would the be called the coo clucks clan ?🤔
6:51 AM · Aug 11, 2022
 
Reddit—Dadjokes
Posted by u/ForeskinWarts April 25, 2023
You know how you can tell when pigeons and chickens are racists?
You see them at a Coo Clucks Clan rally
 
Reddit—Dadjokes
Posted by u/Electric-Possum April 29, 2023
What do you call a group of racist pigeons and chickens?
The Coo Clucks Clan